
Acoustics - Determination of sound power levels of noise sources using sound pressure - Comparison method in situ (ISO 3747:2000)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
NBN EN ISO 3747:2009 - Identical
NBN EN ISO 3747:2011 - Identical
SS EN ISO 3747 Ed. 3 (2010) - Identical
ONORM EN ISO 3747:2011 - Identical
NEN EN ISO 3747:2010 - Identical