GB/T 7424.21-2021光缆总规范第21部分:光缆基本试验方法机械性能试验方法标准
英文:Optical fibre cable generic specification—Part 21:Basic optical cable test procedures—Mechanical test methods GB/T 74...
英文:Optical fibre cable generic specification—Part 21:Basic optical cable test procedures—Mechanical test methods GB/T 74...