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GB/T 3223-1994 Acoustics--Free-field calibration method of underwater sound transducers via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 3238-1982 Acoustical levels and reference quantities (USD) via email in 1-3 business day VALID
GB/T 13823.7-1994 Methods for the calibration of vibration and shock pick-ups-Primary vibration calibration by comparison of phase angles via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 13823.8-1994 Methods for the calibration of vibration and shock pick-ps-Testing of transverse vibration sensitivity via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 22458-2008 General rules of instrumented nanoindentation test (USD) via email in 1-5 business day VALID
GB/T 7582-1987 Acoustics; Threshold of hearing by air conduction as a function of age and sex for otologically normal persons (USD) via email in 1-3 business day ABOLISHED
GB/T 11670-1989 Acoustics-Characteristics and specifications for laboratory standard condenser microphones (USD) via email in 1-3 business day ABOLISHED
JB/DQ 3117-1985 (USD) via email in 1-3 business day ABOLISHED
GB/T 17754-2012 Tribology terminology (USD) via email in 1-8 business day VALID
GB/T 9637-1988 (USD) via email in 1-3 business day ABOLISHED
GB/T 17754-1999 Tribology terminology via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
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 via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB 1251.1-1989 Danger signals for work places-Auditory danger signals via email in 1-3 business day ABOLISHED please email coc@codeofchina.com for quotation
GB/T 7584-1987 Acoustics-Measurement of sound attenuation of hearing protectors-Subjective method (USD) via email in 1-3 business day ABOLISHED
GB/T 14573.1-1993 Acoustics. Statistical methods for determining and verifying stated noise emission values of machinery and equipment. Part 1: General considerations and definitions (USD) via email in 1-3 business day VALID
GB/T 14465-1993 Nomenclature for specifying damping properties of materials via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 14573.4-1993 Acoustics. Statistical methods for determining and verifying stated noise emission values of machinery and equipment. Part 4: Methods for stated values for batches of machines (USD) via email in 1-3 business day VALID
JB/T 7705-1995 via email in 1-3 business day please email coc@codeofchina.com for quotation
GB/T 25898-2010 Instrumented nanoindentation test—Indentation hardness and modulus of thin film (USD) via email in 1-3 business day VALID
GB 4963-1985 Normal equal-loudness contours for pure tones under free field listening conditions (USD) via email in 1-3 business day ABOLISHED
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