PN EN ISO 389-1:2018现行
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：Polish Committee for Standardization
专家解读视频
2018 [03/04/2018]2002 [18/12/2002]
ISO 389-1 : 2017 - Identical
EN ISO 389-1 : 0 - Identical
ISO 389-1 : 1998 - Identical
EN ISO 389-1:2018 - Identical
EN ISO 389-1 : 0 - Identical
ISO 389-1 : 2017 - Identical
EN ISO 389-1:2018 - Identical
