I.S. EN 20140-9:1994被替代
Acoustics - Measurement Of Sound Insulation In Buildings And Of Building Elements - Laboratory Measurements Of Room-to-room Airborne Sound Insulation Of A Suspended Ceiling With A Plenum Above It
出版：National Standards Authority of Ireland
专家解读视频
Specifies a laboratory method of measuring the airborne sound insulation of a suspended ceiling with a plenum of defined height mounted above an acoustical barrier which separates two rooms of a specified test facility.
NF EN 20140-9:1994 - Identical
UNI EN 20140-9:1998 - Identical
NBN EN 20140-9:1995 - Identical
SS EN 20140-9 Ed. 1 (1994) - Identical
SN EN 20140-9:1993 - Identical
ONORM EN 20140-9:1993 - Identical
DIN EN 20140-9 (1993-12) - Identical
BS EN 20140-9:1994 - Identical
UNE EN 20140-9:1995 - Identical
ISO 140-9:1985 - Identical
