
Road traffic noise reducing devices. Procedures for assessing long term performance. Acoustical characteristics
出版:British Standards Institution

专家解读视频
© British Standards Institution 2013
NBN EN 14389-1:2008 - Identical
NS EN 14389-1 Ed. 1 (2007) - Identical
ONORM EN 14389-1:2008 - Identical
UNI EN 14389-1:2008 - Identical
SS EN 14389-1 Ed. 1 (2007) - Identical
NEN EN 14389-1:2007 - Identical
I.S. EN 14389-1:2007 - Identical
DIN EN 14389-1 (2008-02) - Identical