ISO 140-9:1985被替代
Acoustics - Measurements of sound insulation in buildings and of building elements Part 9: Laboratory measurement of room-to-room airborne sound insulation of a suspended ceiling with a plenum above it
出版：International Organization for Standardization
专家解读视频
Defines a laboratory method of measuring the airborne soundinsulation of a suspended ceiling with a plenum of definedheight mounted above an acoustical barrier which separatestwo rooms of a specified test facility.
UNE EN 20140-9:1995 - Identical
AS/NZS 2499:2000 (R2016) - Identical
BS 2750-9:1987 - Identical
NFS 31 074:2002 - Equivalent
NS ISO 140-9 Ed. 1 (1993) - Identical
PN EN 20140-9:1998 - Identical
DIN 52210-2 (1984-08) - Similar
NF EN 20140-9:1994 - Identical
ONORM EN 20140-9:1993 - Identical
NEN ISO 140-9:1994 - Identical
SN EN 20140-9:1993 - Identical
I.S. EN 20140-9:1994 - Identical
BS EN 20140-9:1994 - Identical
DIN EN 20140-9 (1993-12) - Identical
DR 99408 CP - Identical
BS 2750-9(1987) : AMD 7954 - Identical
DIN 52210-2 : 1984 - Similar to
PN EN 20140-9 : 1998 - Identical
NS ISO 140-9 : 1ED 1993 - Identical
NEN ISO 140-9 : 1994 - Identical
