UNI EN 21683:1995被替代
Acoustics - Preferred Reference Quantities For Acoustics Levels
出版：Italian Standards
专家解读视频
Specifies reference quantities and gives definitions of some levels for acoustics. Also gives detailed definitions.
ISO 1683:1983 - Equivalent
NF EN 21683:1994 - Identical
I.S. EN 21683:1994 - Identical
NBN EN 21683:1995 - Identical
BS EN 21683:1994 - Identical
DIN EN 21683 (1994-09) - Identical
ONORM EN 21683:1994 - Identical
SN EN 21683:1994 - Identical
SS EN 21683 Ed. 1 (1994) - Identical
UNE EN 21683:1995 - Identical
