DIN EN ISO 11691 (2010-01)现行
Acoustics - Measurement of insertion loss of ducted silencers without flow - Laboratory survey method (ISO 11691:1995)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
BS EN ISO 11691:2009 - Identical
SN EN ISO 11691:2010 - Identical
NEN EN ISO 11691:2009 - Identical
NBN EN ISO 11691:2009 - Identical
UNE EN ISO 11691:2010 - Identical
NF EN ISO 11691:2009 - Identical
UNI EN ISO 11691:2009 - Identical
SS EN ISO 11691 Ed. 2 (2009) - Identical
