Code of China Chinese Classification Professional Classification ICS Classification Latest Value-added Services

Title Standard No. Implemented On
Verification Scheme of Measuring Instruments for Underwater Sound PressureJJG 2017-20052005-10-28
Acoustics--Reference zero for the calibration of audiometric equipment--Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphonesGB/T 4854.1-19991999-9-1
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