
Optical fibres. Product specifications. Sectional specification for class B single-mode fibres
出版:British Standards Institution

专家解读视频
This part of IEC 60793 is applicable to optical fibre categories B-652, B-653, B-654, B-655, B-656 and B-657.
IEC 60793-2-50:2018 - Identical
EN IEC 60793-2-50:2019 - Identical
EN IEC 60793-2-50:2019 - Identical
IEC 60793-2-50:2018 - Identical