GB/T 5169.31-2022电工电子产品着火危险试验第31部分:火焰表面蔓延总则国家标准
英文:Fire hazard testing for electric and electronic products—Part 31: Surface spread of flame—General guidance GB/T 5169....
英文:Fire hazard testing for electric and electronic products—Part 31: Surface spread of flame—General guidance GB/T 5169....