IEC 60118-2:1983 EN-FR 9b641b74
Hearing aids. Part 2: Hearing aids with automatic gain control circuits
被代替
发布日期 :
1983-01-01
实施日期 :
IEC 60565:2006 EN-FR c2c4b032
Underwater acoustics - Hydrophones - Calibration in the frequency range 0,01 Hz to 1 MHz
被代替
发布日期 :
2006-11-22
实施日期 :