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国家计量标准(JJ)
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Measuring Instruments for Humidity
JJG 2046-1990
Measuring Instruments for Force(≤1MN)
JJG 2045-1990
Measuring Instrumentsfor γ-Ray Exposure
JJG 2044-1989
Measuring Instrumentsfor Exposure of 60~250kVX-Ray (Radiotherapy Level)
JJG 2043-1989
Liquid Scintillation Measuring Instruments for Radioactivity Measurment
JJG 2042-1989
Verification Regulation of Multi-Rate Alternating -Current Watthour Meters
JJG 691-1990
High Insulation Resistance Meter
JJG 690-1990
Verification Regulation of Surface Platinum Resistance Thermometer
JJG 684-1990
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