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BS 7811-2:1995
Guide for determining the effects of ionizing radiation on insulating materials
被代替
发布日期 :
1995-07-15
实施日期 :
BS 7811-4:1995
Guide for determining the effects of ionizing radiation on insulating materials
被代替
发布日期 :
1995-12-15
实施日期 :
BS ISO/IEC 7811-1:2018 - TC
Tracked Changes. Identification cards. Recording technique
现行
发布日期 :
2020-02-27
实施日期 :
BS ISO/IEC 7811-2:2018 - TC
Tracked Changes. Identification cards. Recording technique
现行
发布日期 :
2020-02-26
实施日期 :