NS EN ISO 3744 Ed. 2 (1996)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：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
2ED 1996
SS EN ISO 3744 Ed. 1 (1995) - Identical
UNI EN ISO 3744:1997 - Identical
UNE EN ISO 3744:1996 - Identical
ISO 3744:1994 - Identical
NF EN ISO 3744:1995 - Identical
I.S. EN ISO 3744:1996 - Identical
NBN EN ISO 3744:1996 - Identical
ONORM EN ISO 3744:1996 - Identical
DIN EN ISO 3744 (1995-11) - Identical
BS EN ISO 3744:1995 - Identical
NEN EN ISO 3744:1995 - Identical
SN EN ISO 3744:1996 - Identical
NEN EN ISO 3744:2009 - Identical
UNI EN ISO 3744:2009 - Identical
