UNE EN ISO 3744:2011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
出版：Asociacion Espanola de Normalizacion
专家解读视频
2011 [27/07/2011]2010 [24/02/2010]1996 [17/05/1996]
Supersedes UNE 74034. (07/2003)
NF EN ISO 3744:2009 - Identical
NBN EN ISO 3744:2010 - Identical
I.S. EN ISO 3744:2010 - Identical
NEN EN ISO 3744:2010 - Identical
SS EN ISO 3744 Ed. 3 (2010) - Identical
UNI EN ISO 3744:2010 - Identical
BS EN ISO 3744:2010 - Identical
DIN EN ISO 3744 (2011-02) - Identical
NS EN ISO 3744:2010 - Identical
SN EN ISO 3744:2011 - Identical
NF EN ISO 3744:2012 - Identical
ONORM EN ISO 3744:2011 - Identical
