
Acoustics - Reference zero for the calibration of audiometric equipment - Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones (ISO 389-1:2017)
出版:Asociacion Espanola de Normalizacion

专家解读视频
ISO 389-1:2017 - Identical
EN ISO 389-1:2018 - Identical
EN ISO 389-1:2018 - Identical
ISO 389-1 : 2017 - Identical