EN ISO 3745:2012/A1:2017 声学.声压法测定噪声源声功率级.消声室和半消声室精密法 包含修改件A1,2017
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 - Amendment 1 (ISO 3745:2012/Amd 1:2017)