HD 443:1983被替代
Occluded-ear Simulator For The Measurement Of Earphones Coupled To The Ear By Ear Inserts
出版：Harmonization Documents
專家解讀視頻
S1 [07/09/1983]
UNE 20645:1985 - Similar
PN 93/T-04703:1993 - Identical
NFC 97 611:1986 - Identical
IEC 60711 Ed. 1.0 - Identical
DIN IEC 60711 (1986-11) - Identical
DS HD 443:1995 - Identical
SS IEC 711 Ed. 1 (1985) - Identical
