GB/Z 41287.1-2022通信用建筑物引入光缆第1部分:管道和直埋用引入光缆标准
英文:Optical fiber telecommunication cable for use in premises cabling—Part 1:Optical fibre cables for duct and directly b...
英文:Optical fiber telecommunication cable for use in premises cabling—Part 1:Optical fibre cables for duct and directly b...