ISO 16:1975现行
Acoustics - Standard tuning frequency (Standard musical pitch)
出版：International Organization for Standardization
专家解读视频
KS I ISO 16:2003 - Identical
KS I ISO 16:2014 - Identical
SNV ISO 16:1975 - Identical
NEN 20016:1975 - Identical
NBN ISO 16:1992 - Identical
DIN 1317-1 (1957-03) - Identical
NS ISO 16 Ed. 1 (1989) - Identical
BS 880:1950 - Equivalent
UNE 19171:1956 - Identical
UNE 19472:1956 - Identical
SS ISO 16 Ed. 1 (1985) - Identical
