IEC 61012:1990 EN-FR 8bab7584
Filters for the measurement of audible sound in the presence of ultrasound
现行
发布日期 :
1990-01-31
实施日期 :
IEC 61094-1:2000 EN-FR 4dd7b4d6
Measurement microphones - Part 1: Specifications for laboratory standard microphones
现行
发布日期 :
2000-07-21
实施日期 :