
Acoustics - Laboratory measurement procedures for ducted silencers and air-terminal units - Insertion loss, flow noise and total pressure loss (ISO 7235:2003)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
SS EN ISO 7235 Ed. 3 (2009) - Identical
NEN EN ISO 7235:2009 - Identical
NF EN ISO 7235:2009 - Identical
NBN EN ISO 7235:2009 - Identical