
Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and hemi-anechoic rooms (ISO 3745:2003)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
NEN EN ISO 3745:2010 - Identical
UNE EN ISO 3745:2010 - Identical
NBN EN ISO 3745:2009 - Identical
UNI EN ISO 3745:2009 - Identical
NF EN ISO 3745:2009 - Identical