ONORM 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：Osterreichisches Normungsinstitut
专家解读视频
2011 [01/03/2011]2009 [01/12/2009]1996 [01/05/1996]
SN EN ISO 3744:2011 - Identical
UNE EN ISO 3744:2011 - Identical
NF EN ISO 3744:2009 - Identical
UNE EN ISO 3744:2010 - Identical
NS EN ISO 3744:2010 - Identical
SN EN ISO 3744:2010 - 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
NF EN ISO 3744:2012 - Identical
