JB/T 8729.2-1998 Test methods for hydraulic multi-way directional valves
Some standard content:
C 23, 100. 30
Mechanical Industry Standard of the People's Republic of China
IB/T8729.2-1998
Hydraulic fluid power-
Multiplc directional valve- Test methods1998-03-19 Issued
Ministry of Machinery Industry of the People's Republic of China
1998-07-01 Implementation
JB/T#729.2
This standard is in accordance with the instructions of A. This standard is proposed by the National Technical Committee for Standardization of Hydraulic Industry, and the drafting units are Tianjin Engineering Machinery Research Institute, Changjiang Langle Niuyi, Beizhou Bo Pressure Parts, Linyou Hydraulic Parts Factory, and Changbang Aviation Equipment Co., Ltd.
In the standard, the main people are: Liu Chongshou, Bian Qingxu, Zhu Jiuwen, Li Kuang, Yu Jiming, 1 Scope
Mechanical Industry Standard of the People's Republic of China
Hydraulic multi-way reversing valve
Test methods
Hydraulic fluid power
Multiple directlonat valve-Test methodsJ8/T8729.2-199B
This standard specifies the definition, name, year and test methods of hydraulic multi-way reversing valve (abbreviated as multi-way reversing valve). The technical standard is applicable to the test and factory test of hydraulic multi-way reversing valve with high pressure or other oils of equivalent properties as the working medium.
2 Referenced standards
The provisions contained in the two standards constitute the provisions of this standard through reference in the vehicle standard. This standard version When using this standard, the versions shown are all valid, and all bad standards will be subscribed. Those who use this standard should explore the possibility of using the latest versions of the following standards: CB/785.1-98 Pneumatic E-shaped symbol
GB/114039--93 Liquid crystal system working medium solid annual residual particle pollution level code 3 Definition
This standard adopts the following definitions:
3.1 The pressure specified on the nominal positive
multi-valve name,
3. 2 Load capacity
refers to the pressure set by the overload test of the AB port of the industrial tank. 3.3 Nominal flow rate
The nominal flow rate of the safety valve.
3.4 Test flow rate
When testing the performance of multiple-way valves, the flow rate specified in the internal standard, internal standard, internal standard, and overload test is set to 205% of the nominal flow rate. The test flow rate will be the average daily nominal flow rate test: volume, unit and symbol
weight, unit and symbol are shown in Table 1.
Table 1 Quantity, unit and symbol
Nominal diameter of lubrication
Method source spectrum
Approved by the Ministry of Machinery Industry 19%-03-1
1998-07-01
Inner diameter of channel
Pressure square. Pressure stem
Temperature-cleared mass film
Recessed dynamic viscosity width
Isotropic volume single potential
Note: M
Mass L-
Test quantity and test piece
5.1 Test circuit
JB/T8729.2—1998
Table 1 End of the test circuit diagram: 5.1.1 See Figure A for the original diagram of the test circuit. 5.1.2 The flow rate of the oil source of the test device should be adjustable, and the oil source flow rate should be greater than the nominal flow rate of the test pipe. The oil source pressure can be overloaded by 0%~30% for a short time. 5.1 Position of pressure measuring points 5.2.1 The inlet pressure measuring point should be located between the downstream of the disturbance source (the source, the bend) and the upstream of the test pipe. The distance from the disturbance source should be greater than 1 (the pipe diameter). The maximum distance from the test pipe is 525.2.2 The outlet pressure measuring point should be located only 10 inches downstream of the test pipe. 5.3.3 During the connection test, if the position of the measuring point does not meet the above requirements, a corresponding compensation value shall be given. 5.3 Measuring hole
5.3.1 The length of the pressure measuring hole shall not be less than 1 mm and shall not be greater than 6 mm. 5.3.2 The length of the pressure measuring hole shall not be less than times the diameter of the pressure measuring hole. 5.3.3
The pressure hole should be close to the center of the channel. The surface of the channel and the pressure gauge should be kept sharp without scratches. The connection between the pressure measuring point and the test instrument should not be less than 3.5.3.4
When the pressure measuring point is connected to the test instrument, the air in the connecting pipe should be excluded. 5.4 Position of the temperature measuring point
The temperature measuring point should be set 15 inches upstream of the measuring point. 5.5 Test oil
3.5.1 Viscosity; the kinematic viscosity at 40°C is 42~72 mn/s (specified separately upon special requirements). 5.5.2 Oil temperature. Unless otherwise specified, the type test should be carried out at 50+2°C. The test should be carried out at 5°C. 5.5.1 Cleanliness: The solid pollution level of the test oil shall not be higher than the level specified in GB/114029 [9/165.6 General state
The range of the controlled quantity shall not exceed the provisions of Table 3. When measuring or testing the test parameters in a steady state, the selection of the number of test teeth and the distribution of the obtained data shall be able to reflect the performance of the tested gear in the entire range. 5.6.3 In order to ensure the reproducibility of the test results, the time interval between measurements shall be specified. 2
JH/T 8729.2—1998
Table? 5.7.
5.7.1 The test valve and related parts of the test circuit shall be composed of a visual inspection system to ensure that the inlet pressure change of the test valve is within the range of 500-&00MPe/g. Note: The inlet pressure rate system starts with the most stable pressure setting and the pressure change rate is four times that of the test valve. 7.2 The relative position between the valve and the visual inspection network can be increased by adjusting the control force. The pressure condition can be estimated by formula etc. The pressure gradient obtained is the minimum pressure loss of the test valve. Set the test flow rate in the middle section, measure the oil flow rate, and the volume of the test valve between the test valve and the main valve, 57,31. The test time must not exceed 10m5.8. The pressure measurement accuracy is A, B, and III: The allowable system error of the measurement system is specified in Table 3. The table measurement system is relatively sufficient for the system environment error recommendation
volume wind etc.
out of the change. Force C.2M1
: Type light adjustment no longer law ten level test performance phase, the test is not less than (the average degree, 6 test items and test methods to reach
endurance test
,! Before the multi-way valve test, with limited test adjustment. C
layout 1,2 sequence test leaves for each pressure certificate port with the attached pressure test compensation pressure method before the pressure test jade force is set oil sense high working pressure method 1.5 Section 3
JE/T8729.2:1998
The test length is 2 hours per test! The test speed must be increased. The test should be completed at the right time and without any unexpected damage to the components. 6.1.3 During the cold pressure test, each test port should be connected to the lubrication box. 6.2 Factory test
The following test items and methods shall be specified in 4. Among them, the leakage inside the switching position, pressure loss and supplementary flushing and oil supplementation are the two items. Sampling test items,
(.3 type test
type test items are modified to obtain table 5. Table 4 shows! Test items and methods
test function!
oil circuit and street cleaning machine membrane
replace the same sex embedded
middle pipe
optimal test method
now the whole test room 4! Oil flow, check the oil station type cleaning function room idle network 2 single
quality 7-(7-2) make the blue test room 4 The ratio of P oil 11 is 2-2, so that the T curve 11 of the tested closure has no back pressure or is the specified back pressure, and the test idle 1 is charged with public flow,
When the aging method is read 4 manual multi-way week under the above test code, select the test lubrication 4 each car · continuous action 1 heart ratio, check the repeated busy positioning situation, when the test time 4 is dynamic Feng still flashing, the end call 23. Make the digging before the music technology try 4 required control pressure, then the electric change network B before the electrical power,If the action is continuous for more than 10 times, the oil inlet of the tested valve is at the median position A(1), and the pressure is increased from the flow network to the nominal pressure of the oil outlet. Except for the oil outlet, the other oil outlets are at the oil outlet. The test outlet is safe. All the intervals are closed. The oil inlet of A and B is pumped into the T reversing position of the tested valve 4. Adjust the flow detection valve 2-1. The pressure at the P port is the nominal pressure of the tested valve 4. The pressure is increased to make the sliding position at each reversing position. The leakage at the T port is gradually increased. Before measuring the maximum leakage flux, the tested valve 4 should be operated more than twice in each phase, and the stop valve should be 3 0s and then type more,
some of the operation valves of the gateway state A, 1 oil mountain connected, will even test the network of the bone closure number in each oil some appropriate, and make the test through the fee 4 of the selected volume of the public ladder flow, divided by the variable 31,3-22-1.-4 such as using multiple support point pressure support volume? And the volume 1A,. Oil port huge,,, planning maintenance pressure
+non-loss:
P+A, +T disassembly:
Among them, rrpa
reverse when P→BA+T is
(for A to oil direction is -A when
DpP+12, = Pr PAl:
Safety adjustment
JR/T8729.2—1998
Table 4 (yuan)
A, only the above reason 4 replacement position, the pressure adjustment ratio of the plastic system 2-: to the nominal size of the valve is 1: higher than the above, and the flow rate of the return test is reduced by 1 to select the required
setting pressure range and pressure blanket qualitative, the operation adjustment ratio is shared by the main work account and then by the whole To the full, repeat the test plate: pass the pressure close to *2-1 after the upper and lower lungs.
adjust the safety scale of the test shot to the nominal pressure, the pressure 3-1 measurement as the conversion value,
measure the compensation quantity under the opening and closing pressure: adjust the test network to the nominal force, pay attention to the nominal flow of the cross network, keep the maximum residual flow under the positive force,
> plan the rate close to 2-1, make the piano wide and strong before the jade can be sequenced to the sufficient jade, when the value - at T Measure the overflow volume within 1 mm; b. Pressure regulating overflow plate 21, with the subject's safety flow and start to make each system wet volume rise, when,, lift the set at the bottom of the clever call, in the control of the pain volume within 1min.
Adjust the safety interval force: according to the user's required force adjustment, and then tighten the screw
root mode reduction is in the city position, the subject's operation number reduction switch, from A (B> throttle reverse oil·adjust the load Tao stay on Lanneng, adjust the overflow foot 2-1. Make the system rise to the nominal output - and force the excessive volume of the road business! Long danger near volume, interval action 3 times·stop by 29 9, white T oil -7 large secretion pain volume test test enterprise down close: Chengjing period 2-1 of the positive force with the same to the piece of fee network workpiece is loaded before the left can do high 15 less, open and then be tested to test the volume, the civil method with the first item of the long aldehyde
war test translation under the Chinese should Lu, from A (1 fairy inlet, adjust the network 2-1 so that the system through the small large rise rate nominal pressure, and make the two plan system read the flow preparation for the material flow, the dynamic stop time 30, by the casual mouth inside the world casual
world package index
two parts
consumption please is package Tian
neutral position training
Xie salt and oil supplement
volume west part
according to the test slide read in Chinese position, brown Select the oil flow rate for the test, the output pressure is the oil volume or force reported by the institute, the group outputs the oil filling performance under the pressure, the minimum p=P,-(i.e. r) the sliding volume, the wine flow rate is 2-2. The return value of the test is maintained at 2.2MPr. Please keep the pressure for 3mn5 after repeated reversing. Test consolidation. Test state. JB/T8729.2--1998. Test items and methods. Follow the provisions of the factory test items and test methods. Test alone: (mountain) During the pressure test, please set the test time to each position, and restore the test time to 4 The amount of sludge is gradually increased to 12G% of the public circulation weight, and the return set element measurement points (the set measurement points are used to teach the production scale to include the main loss curve increase table 31, 3, 33.24. It is best to use the retreat point to measure the service force of each set point. Calculate the force report type @ when adjusting the measurement, the format is missing and the trial reading! The sliding flash position is set under the specified measurement position, so that the test room 1 of the oil 1] enters the method, water, zero is selected from the public music hall, and several measurement points are set during the period (the set measurement points should be sufficient to infer the internal leakage adjustment curve), and the internal conditions of the set points are measured respectively. When the pressure isobaric test is performed in the safety room, the 4-phase connection should be adjusted to the nominal pressure, and the amount of gear passing through the safety room should be the nominal amount, and then the system pressure should be changed. The bearing point should measure the safety net inlet F and the bottom pressure of the situation. The pressure is measured at the safety room. The pressure is measured at the certain measurement points to start the isobaric holding line. The heat flow room 2-1 is the 4B oil in the consultation room. The valve needs to pay attention to the relevant), the special kidney network pipe is introduced, and the smoke generation room 1 is the nominal force to make the competition delete: the source amount is combined! The flow rate is required. The dynamic flow pump 1-2, adjust the two 2-3 with the standard, so that the control agent is [the gas break! The load is reduced by 6 or the explosion is asked to read - if it is in the anti-placement clause! 1 heart open) value is tried + import Qiu force down to the starting selection ten thousand turn try thinking 1 preparation
given the system as follows poem world white
public force · lost mountain station
sense of security enterprise network case in the square
sustainable curve load
out of the positive force estimate shall not be greater than the most beautiful state pressure small night is 2 fire and then describe the average room mountain security
Beijing grid heart secret change question fast to the right position, step joy add energy printing beauty with the air nourishing lawsuit reading 4 import place produces - two enough financial forget the design sample exhibition
month is! Falling device, only remember to test the lowering 1 can be placed in the standard chemical room 4 pass with the nominal building book, carefully method A, R, into the industry control certificate 2: the company in the flow of two 7-1 into 7-2), then the cable medical for the drum test letter of the public Xie use 2-2 to do the test 1 or fixed
pressure liquid dyeing and elimination time reversing, white neutral light port standard, control direction setting: layer large line rotten, with a meter to measure the maximum channel length of the test valve 4 fast! Also! Let, for the lower B in (oil port flow, technical
God method Xie volume secretion force)
the dynamic
P+Note (BI porcelain volume
of the same should
AB building number
micro method
high test
durability test
JB/T 8729.2—1998
Maintain the nominal power of the whole kidney, please note that all relevant companies must comply with the following regulations:
Micro-allow the reason for 4 A days, please replace 1 encounter fairy and pass with the attached flow rate resources A out of the mountain bone level slowly move to each Australian question world (consider the small increment of the dynamic time and the method of measuring the small increment of the dynamic time and the daily corresponding box
can try the idle import through the nominal flow sliding belonging to the median situation to replace the fast time must be accepted (the city with a small amount of dynamic sliding smoke situation and the measurement of the number of resources small increase mother out of the method) to wait for the time (day) oil port transfer port 2-4 page title for the public security pressure 5 do not diffuse the mother change through AWith the subject's safety flow around and start to make each system wet volume rise, when,, the lift is set at the bottom of the clever call, in the control volume within 1min.
adjust the safety interval force: according to the user's required force adjustment, and then tighten the screw
root mode reduction is in the city position, the subject's operation number reduction switch, from A (B> throttle reverse oil·adjust the load Tao stay on Lan energy, the overflow foot 2-1. Make the system rise to the nominal output - and force the excessive volume of the road business! Long dangerous volume, interval action 3 times·stop from 29 9, white T oil -7 large secretion pain volume test test enterprise down close: Chengjing period 2-1 of the positive force with the same to the piece of fee network workpiece is loaded before the left can do high 15 less, open and then be tested to test the volume, the civil method with the first item of the long aldehyde
war test translation under the Chinese should Lu, from A (1 fairy inlet, adjust the network 2-1 so that the system through the small large rise rate nominal pressure, and make the two plan system read the flow preparation for the material flow, the dynamic stop time 30, by the casual mouth inside the world casual
world package index
two parts
consumption please is package Tian
neutral position training
Xie salt and oil supplement
volume west part
according to the test slide read in Chinese position, brown Select the oil flow rate for the test, the output pressure is the oil volume or force reported by the institute, the group outputs the oil filling performance under the pressure, the minimum p=P,-(i.e. r) the sliding volume, the wine flow rate is 2-2. Make the return port of the test maintain the back value of 2.2MPr, please keep the pressure for 3mn5 after repeated reversing. Test consolidation. Test state. JB/T8729.2--1998. Test items and methods. Follow the provisions of the factory test items and test methods. Test alone: (mountain) During the pressure test, please set the test time to each position, and restore the test time to 4 The amount of sparseness is gradually increased to 12G% of the public circulation weight, and the return set element measurement point (the set measurement point teaching production scale is used to include the main loss curve increase table 31, 3, 33.24. It is best to use the daily measurement of the service force of each set point. The calculation force report type @ is adjusted and tested within the specification. The slip flash is set under the specified measurement position, so that the test room 1 The oil is analyzed by the method of 1], water, and non-quality oil is selected from the zero point to the public music hall. Several measuring points are set during the test (the number of measuring points set should be sufficient to deduce the internal leakage adjustment curve), and the internal pressure of the set points is measured respectively. When the pressure is equal in the safety room, the 4 points should be adjusted to the nominal pressure, and the amount of the gears passing through the safety room should be the nominal pressure, and then the system force should be changed. The bearing point is measured at the inlet F of the safety net and the bottom pressure of the safety room. The oil in the 4B room of the hot flow room 2-1 is consulted by the valve. The valve needs to be paid attention to. The special kidney network pipe is introduced into the stomach, and the smoke generation room 1 is used to make the force pass through the competition to delete: the source volume is combined! The flow rate is required. The dynamic pressure pump 1-2 is adjusted with the standard 2-3 to control the gas of the control agent. Both load down 6 decision or explosion decision to read - suppose to resist the placement of money! 1 heart open) value was tried + import Qiu force down to the starting selection Wan turn try 1 preparation
given as follows poem world white
public force · lost mountain station
sense of security enterprise network case in the square
sustained curve load
out of the positive force estimate shall not be greater than the most beautiful state pressure small night for 2 fire and then describe the average room mountain security
Beijing grid heart close change question fast to the right position, step joy plus can print beauty with the gas nourishment lawsuit read 4 import place to produce - two enough financial forget the design of the sample exhibition
month is! Falling device, only remember to test the lowering 1 can be placed in the standard chemical room 4 pass with the nominal building book, carefully method A, R, into the industry control certificate 2: the company in the flow of two 7-1 into 7-2), then the cable medical for the drum test letter of the public Xie use 2-2 to do the test 1 or fixed
pressure liquid dyeing and elimination time reversing, white neutral light port standard, control direction setting: layer large line rotten, with a meter to measure the maximum channel length of the test valve 4 fast! Also! Let, for the lower B in (oil port flow, technical
God method Xie volume secretion force)
the dynamic
P+Note (BI porcelain volume
of the same should
AB building number
micro method
high test
durability test
JB/T 8729.2—1998
Maintain the nominal power of the whole kidney, please note that all relevant companies must comply with the following regulations:
Micro-allow the reason for 4 A days, please replace 1 encounter fairy and pass with the attached flow rate resources A out of the mountain bone level slowly move to each Australian question world (consider the small increment of the dynamic time and the method of measuring the small increment of the dynamic time and the daily corresponding box
can try the idle import through the nominal flow sliding belonging to the median situation to replace the fast time must be accepted (the city with a small amount of dynamic sliding smoke situation and the measurement of the number of resources small increase mother out of the method) to wait for the time (day) oil port transfer port 2-4 page title for the public security pressure 5 do not diffuse the mother change through AWith the subject's safety flow around and start to make each system wet volume rise, when,, the lift is set at the bottom of the clever call, in the control volume within 1min.
adjust the safety interval force: according to the user's required force adjustment, and then tighten the screw
root mode reduction is in the city position, the subject's operation number reduction switch, from A (B> throttle reverse oil·adjust the load Tao stay on Lan energy, the overflow foot 2-1. Make the system rise to the nominal output - and force the excessive volume of the road business! Long dangerous volume, interval action 3 times·stop from 29 9, white T oil -7 large secretion pain volume test test enterprise down close: Chengjing period 2-1 of the positive force with the same to the piece of fee network workpiece is loaded before the left can do high 15 less, open and then be tested to test the volume, the civil method with the first item of the long aldehyde
war test translation under the Chinese should Lu, from A (1 fairy inlet, adjust the network 2-1 so that the system through the small large rise rate nominal pressure, and make the two plan system read the flow preparation for the material flow, the dynamic stop time 30, by the casual mouth inside the world casual
world package index
two parts
consumption please is package Tian
neutral position training
Xie salt and oil supplement
volume west part
according to the test slide read in Chinese position, brown Select the oil flow rate for the test, the output pressure is the oil volume or force reported by the institute, the group outputs the oil filling performance under the pressure, the minimum p=P,-(i.e. r) the sliding volume, the wine flow rate is 2-2. Make the return port of the test maintain the back value of 2.2MPr, please keep the pressure for 3mn5 after repeated reversing. Test consolidation. Test state. JB/T8729.2--1998. Test items and methods. Follow the provisions of the factory test items and test methods. Test alone: (mountain) During the pressure test, please set the test time to each position, and restore the test time to 4 The amount of sparseness is gradually increased to 12G% of the public circulation weight, and the return set element measurement point (the set measurement point teaching production scale is used to include the main loss curve increase table 31, 3, 33.24. It is best to use the daily measurement of the service force of each set point. The calculation force report type @ is adjusted and tested within the specification. The slip flash is set under the specified measurement position, so that the test room 1 The oil is analyzed by the method of 1], water, and non-quality oil is selected from the zero point to the public music hall. Several measuring points are set during the test (the number of measuring points set should be sufficient to deduce the internal leakage adjustment curve), and the internal pressure of the set points is measured respectively. When the pressure is equal in the safety room, the 4 points should be adjusted to the nominal pressure, and the amount of the gears passing through the safety room should be the nominal pressure, and then the system force should be changed. The bearing point is measured at the inlet F of the safety net and the bottom pressure of the safety room. The oil in the 4B room of the hot flow room 2-1 is consulted by the valve. The valve needs to be paid attention to. The special kidney network pipe is introduced into the stomach, and the smoke generation room 1 is used to make the force pass through the competition to delete: the source volume is combined! The flow rate is required. The dynamic pressure pump 1-2 is adjusted with the standard 2-3 to control the gas of the control agent. Both load down 6 decision or explosion decision to read - suppose to resist the placement of money! 1 heart open) value was tried + import Qiu force down to the starting selection Wan turn try 1 preparation
given as follows poem world white
public force · lost mountain station
sense of security enterprise network case in the square
sustained curve load
out of the positive force estimate shall not be greater than the most beautiful state pressure small night for 2 fire and then describe the average room mountain security
Beijing grid heart close change question fast to the right position, step joy plus can print beauty with the gas nourishment lawsuit read 4 import place to produce - two enough financial forget the design of the sample exhibition
month is! Falling device, only remember to test the lowering 1 can be placed in the standard chemical room 4 pass with the nominal building book, carefully method A, R, into the industry control certificate 2: the company in the flow of two 7-1 into 7-2), then the cable medical for the drum test letter of the public Xie use 2-2 to do the test 1 or fixed
pressure liquid dyeing and elimination time reversing, white neutral light port standard, control direction setting: layer large line rotten, with a meter to measure the maximum channel length of the test valve 4 fast! Also! Let, for the lower B in (oil port flow, technical
God method Xie volume secretion force)
the dynamic
P+Note (BI porcelain volume
of the same should
AB building number
micro method
high test
durability test
JB/T 8729.2—1998
Maintain the nominal power of the whole kidney, please note that all relevant companies must comply with the following regulations:
Micro-allow the reason for 4 A days, please replace 1 encounter fairy and pass with the attached flow rate resources A out of the mountain bone level slowly move to each Australian question world (consider the small increment of the dynamic time and the method of measuring the small increment of the dynamic time and the daily corresponding box
can try the idle import through the nominal flow sliding belonging to the median situation to replace the fast time must be accepted (the city with a small amount of dynamic sliding smoke situation and the measurement of the number of resources small increase mother out of the method) to wait for the time (day) oil port transfer port 2-4 page title for the public security pressure 5 do not diffuse the mother change through AMake the control agent hill [gas break! Both load down 6 decisions or explode decision question reading - suppose to resist the placement! 1 heart open) value is tried + import hill force down to the starting selection ten thousand turn try thinking 1 preparation
give the following poem world white
public force · lost mountain station
sense of security enterprise network case in the square
sustainable curve load
out of the positive force estimate shall not be greater than the most beautiful state pressure small night is 2 fire and then describe the average room mountain security
Beijing grid heart close change question fast to the right position, step joy add energy printing beauty with gas nourishment lawsuit reading 4 import place produces - two enough wealth forget the design of the sample exhibition
month is! Falling device, only remember to test the lowering 1 can be placed in the standard chemical room 4 pass with the nominal building book, carefully method A, R, into the industry control certificate 2: the company in the flow of two 7-1 into 7-2), then the cable medical for the drum test letter of the public Xie use 2-2 to do the test 1 or fixed
pressure liquid dyeing and elimination time reversing, white neutral light port standard, control direction setting: layer large line rotten, with a meter to measure the maximum channel length of the test valve 4 fast! Also! Let, for the lower B in (oil port flow, technical
God method Xie volume secretion force)
the dynamic
P+Note (BI porcelain volume
of the same should
AB building number
micro method
high test
durability test
JB/T 8729.2—1998
Maintain the nominal power of the whole kidney, please note that all relevant companies must comply with the following regulations:
Micro-allow the reason for 4 A days, please replace 1 encounter fairy and pass with the attached flow rate resources A out of the mountain bone level slowly move to each Australia to ask the heart of the world (consider the small increment of the dynamic time and the method of measuring the small increment of the flow rate with the change of the time day box
Can try the idle import through the nominal flow rate sliding belonging to the median situation to replace the fast time must be accepted (the city with a small amount of dynamic sliding smoke situation and the measurement of the number of resources small increase mother out of the method) to wait for the time (day) oil port transfer port 2-4 page title for the public security pressure 5 do not diffuse the mother change through AMake the control agent hill [gas break! Both load down 6 decisions or explode decision question reading - suppose to resist the placement! 1 heart open) value is tried + import hill force down to the starting selection ten thousand turn try thinking 1 preparation
give the following poem world white
public force · lost mountain station
sense of security enterprise network case in the square
sustainable curve load
out of the positive force estimate shall not be greater than the most beautiful state pressure small night is 2 fire and then describe the average room mountain security
Beijing grid heart close change question fast to the right position, step joy add energy printing beauty with gas nourishment lawsuit reading 4 import place produces - two enough wealth forget the design of the sample exhibition
month is! Falling device, only remember to test the lowering 1 can be placed in the standard chemical room 4 pass with the nominal building book, carefully method A, R, into the industry control certificate 2: the company in the flow of two 7-1 into 7-2), then the cable medical for the drum test letter of the public Xie use 2-2 to do the test 1 or fixed
pressure liquid dyeing and elimination time reversing, white neutral light port standard, control direction setting: layer large line rotten, with a meter to measure the maximum channel length of the test valve 4 fast! Also! Let, for the lower B in (oil port flow, technical
God method Xie volume secretion force)
the dynamic
P+Note (BI porcelain volume
of the same should
AB building number
micro method
high test
durability test www.bzxz.net
JB/T 8729.2—1998
Maintain the nominal power of the whole kidney, please note that all relevant companies must comply with the following regulations:
Micro-allow the reason for 4 A days, please replace 1 encounter fairy and pass with the attached flow rate resources A out of the mountain bone level slowly move to each Australian question world (consider the small increment of the dynamic time and the method of measuring the small increment of the dynamic time and the daily corresponding box
can try the idle import through the nominal flow sliding belonging to the median situation to replace the fast time must be accepted (the city with a small amount of dynamic sliding smoke situation and the measurement of the number of resources small increase mother out of the method) to wait for the time (day) oil port transfer port 2-4 page title for the public security pressure 5 do not diffuse the mother change through A
GongGeli
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