Code of China Chinese Standard Classification Professional Classification ICS Classification Latest
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GB/T 22458-2008 General rules of instrumented nanoindentation test 540.0 via email in 1~3 business day valid
GB/T 14573.4-1993 Statistical methods for determining and verifying stated noise emission values of machinery and equipment. Part 4: Methods for stated values for batches of machines 150.0 via email in 1~3 business day valid
GB/T 14573.2-1993 Statistical methods for determining and verifying stated noise emission values of machinery and equipment. Part 2: Methods for stated values for individual machines 30.0 via email in 1~3 business day valid
GB 11669-1989 105.0 via email in 1~3 business day superseded
QJ 2431.2-1993 Aerodynamics Terms - Test Part 945.0 via email in 1~10 business day valid
GB/T 4854.7-1999 Acoustics-Reference zero for the calibration of audiometric equipment-Part 7:Reference threshold of hearing under free-field and diffuse-field listening conditions 195.0 via email in 1~3 business day abolished
QJ 2222-1992 540.0 via email in 1~5 business day valid
GB/T 17696-1999 Acoustics--Audiometric test methods--Part 3:Speech audiometry 225.0 via email in 1~3 business day valid
GB 3947-1983 1650.0 via email in 1~10 business day superseded
GB 3239-1982 Expression of physical and subjective magnitudes of sound and noise in air 30.0 via email in 1~3 business day valid
GB 3768-1983 135.0 via email in 1~3 business day superseded
GB 3240-1982 Preferred frequencies for the acoustical measurement 30.0 via email in 1~3 business day valid
GB/T 3223-1994 Acoustics--Free-field calibration method of underwater sound transducers 270.0 via email in 1~3 business day valid
GB/T 25898-2010 Instrumented nanoindentation test—Indentation hardness and modulus of thin film 240.0 via email in 1~3 business day valid
GB/T 14573.3-1993 methods for determining and verifying stated noise emission values of machinery and equipment. Part 3: Simple (transition) method for determining and verifying labelled va 30.0 via email in 1~3 business day valid
GB/T 4854.1-1999 Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones 150.0 via email in 1~3 business day superseded
GB/T 18022-2000 Acoustics - Methods for measuring the longitudinal sound speed and attenuation coefficient of rubbers and plastics in the frequency range 1 MHz to 10 MHz 150.0 via email in 1~3 business day valid
GB/T 3947-1996 Acoustical terminology 2550.0 via email in 1~3 business day valid
QJ 2283-1992 150.0 via email in 1~3 business day valid
GB/T 9637-1988 405.0 via email in 1~5 business day superseded
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