
Industrial fans - Determination of fan sound power levels under standardized laboratory conditions Part 4: Sound intensity method
出版:International Organization for Standardization

专家解读视频
KS B ISO 13347-4:2005 - Identical
NF ISO 13347-4:2004 - Identical
BS 848-2.4:2004 - Identical
BS ISO 13347-4:2004 - Identical
NEN ISO 13347-4:2004 - Identical