BS EN ISO 3744:2009被替代
Acoustics. Determination of sound power levels of noise sources using sound pressure. Engineering method in an essentially free field over a reflecting plane
出版：British Standards Institution
专家解读视频
© British Standards Institution 2013
ISO 3744:1994 - Identical
NBN EN ISO 3744:2010 - Identical
NEN EN ISO 3744:2010 - Identical
SS EN ISO 3744 Ed. 3 (2010) - Identical
NF EN ISO 3744:2009 - Identical
UNE EN ISO 3744:2010 - Identical
