DIN EN ISO 3745/A1:2015-04
Отменен
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/DAM 1:2015); German version EN ISO 3745:2012/prA1:2015
