
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:2010)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
NF EN ISO 3746:2009 - Identical
NBN EN ISO 3746:2011 - Identical
NS EN ISO 3746:2010 - Identical
UNE EN ISO 3746:2010 - Identical
SN EN ISO 3746:2011 - Identical
SN EN ISO 3746:2010 - Identical