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GB/T 20430-2006 Acoustics―Noise control design procedures for open plant via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
JJF 1157-2006 Calibration Specification for Measuring Amplifiers (USD) via email in 1-5 business day VALID
GB/T 21231.2-2018 Acoustics—Measurement of airborne noise emitted andstructure-borne vibration induced by small air-moving devices—Part 2:Structure-borne vibration measurements (USD) via email in 1-3 business day VALID
GB/T 22159.3-2008 Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 3: Indirect method for determination of the dynamic stiffness of resilient supports for translatory motion (USD) via email in 1-5 business day VALID
GB/T 27763-2011 Acoustics—Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance (USD) via email in 1-3 business day VALID
GB/T 6882-2016 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for anechoic rooms and hemi-anechoic rooms (USD) via email in 1-8 business day VALID
GB/T 3947-1996 Acoustical terminology via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 19889.14-2010 Acoustics—Measurement of sound insulation in buildings and of building elements—Part 14:Guidelines for special situations in the field (USD) via email in 1-5 business day VALID
JJG 1018-2007 Verification Regulation of Standard Hydrophones in the Frequency Range 1 Hz to 2 kHz (USD) via email in 1-3 business day VALID
GB/T 17251-1998 Acoustics--Calibration method of hydrophone acceleration sensitivity via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 31004.3-2014 Acoustics—Measurement of sound insulation in buildings and of building elements using sound intensity—Part 3:Laboratory measurements at low frequencies (USD) via email in 1-3 business day VALID
JJG 893-2007 Verification Regulation for Ultrasonic Source of Ultrasonic Doppler Foetal Meters (USD) via email in 1-3 business day VALID
JJG 482-2005 Verification Regulation of Laboratory Standard Microphones (Free-field Reciprocity Method) (USD) via email in 1-3 business day ABOLISHED
GB/Z 38251-2019 Acoustics—Calculation of sound attenuation during propagation for electrical converter station—Engineering method (USD) via email in 1-5 business day VALID
GB/T 3222.1-2006 Acoustics―Description measurement and assessment of environmental noise―Part 1:Basic quantities and assessment procedures via email in 1-3 business day VALID please email coc@codeofchina.com for quotation
GB/T 17247.1-2000 Acoustics--Attenuation of sound during propagation outdoors--Part 1:Calculation of the absorption of sound by the atmosphere (USD) via email in 1-5 business day VALID
GB/T 31014-2014 Acoustics—Laboratory methods of underwater target strength measurement (USD) via email in 1-3 business day VALID
GB/T 16296.2-2016 Acoustics—Audiometric test methods—Part 2:Sound-field audiometry with pure-tone and narrow-band test signals (USD) via email in 1-3 business day VALID
GB/T 4130-2017 (USD) via email in 1-5 business day VALID
GB/T 22157-2018 Acoustics—Specification of test tracks for measuring noise emitted by road vehicles and their tyres (USD) via email in 1-5 business day VALID
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