DIN EN ISO 3744 (2011-02)现行
Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
UNE EN ISO 3744:2010 - Identical
NF EN ISO 3744:2009 - Identical
ONORM EN ISO 3744:2011 - Identical
UNE EN ISO 3744:2011 - Identical
SN EN ISO 3744:2011 - Identical
NS EN ISO 3744:2010 - Identical
NBN EN ISO 3744:2010 - Identical
