IEC 60793-1-40:2019 RLV EN 20771923
Optical fibres - Part 1-40: Attenuation measurement methods
REVISED
发布日期 :
2019-03-27
实施日期 :
ISO 10505:2009 EN 912366f8
Photography — Root mean square granularity of photographic films — Method of measurement
现行
发布日期 :
2009-05-05
实施日期 :
IEC 62888-4:2018 EN-FR 1b534907
Railway applications - Energy measurement on board trains - Part 4: Communication
现行
发布日期 :
2018-01-25
实施日期 :