GB/T 17651.1-2021电缆或光缆在特定条件下燃烧的烟密度测定第1部分:试验装置标准
英文:Measurement of smoke density of cables or optical fiber cables burning under defined conditions—Part 1: Test apparatu...
英文:Measurement of smoke density of cables or optical fiber cables burning under defined conditions—Part 1: Test apparatu...