GB/T 5169.20-2021电工电子产品着火危险试验第20部分:火焰表面蔓延试验方法概要和相关性标准
英文:Fire hazard testing for electric and electronic products—Part 20: Surface spread of flame—Summary and relevance of te...
英文:Fire hazard testing for electric and electronic products—Part 20: Surface spread of flame—Summary and relevance of te...