IEC 60050-845:1987 EN-FR-RU 51aa2c7c
International Electrotechnical Vocabulary. Lighting
REVISED
发布日期 :
1987-12-15
实施日期 :
IEC 60050-845:1987/AMD2:2019 EN-FR a05a4794
Amendment 2 - International Electrotechnical Vocabulary (IEV) - Part 845: Lighting
REVISED
发布日期 :
2019-10-17
实施日期 :