IEC 61745:1998 EN-FR 94a4a344
End-face image analysis procedure for the calibration of optical fibre geometry test sets
REVISED
发布日期 :
1998-08-25
实施日期 :
IEC 61183:1994 EN-FR 0d95d9a8
Electroacoustics - Random-incidence and diffuse-field calibration of sound level meters
现行
发布日期 :
1994-06-07
实施日期 :