ONORM 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：Osterreichisches Normungsinstitut
专家解读视频
2009 [01/12/2009]1996 [01/05/1996]
SS EN ISO 3744 Ed. 3 (2010) - Identical
NEN EN ISO 3744:2010 - Identical
NS EN ISO 3744:2010 - Identical
NBN EN ISO 3744:2010 - Identical
NBN EN ISO 3744:1996 - Identical
UNE EN ISO 3744:1996 - Identical
NEN EN ISO 3744:2009 - Identical
SN EN ISO 3744:1996 - Identical
SN EN ISO 3744:2010 - Identical
UNE EN ISO 3744:2010 - Identical
SS EN ISO 3744 Ed. 2 (2009) - Identical
NS EN ISO 3744:2009 - Identical
NF EN ISO 3744:2009 - Identical
UNI EN ISO 3744:2009 - Identical
