
Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:1994/Cor 1:2006)
出版:Comite Europeen de Normalisation

专家解读视频
Acoustics - Hearing protectors - Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn (ISO 4869-2:1994/Cor 1:2006)
出版:Comite Europeen de Normalisation
专家解读视频