GB/T 17466.21-2022家用和类似用途固定式电气装置的电器附件安装盒和外壳第21部分:用于悬吊装置的安装盒和外壳的特殊要求国家标准
英文:Boxes and enclosures for electrical accessories for household and similar fixed electrical installations—Part 21: Par...
英文:Boxes and enclosures for electrical accessories for household and similar fixed electrical installations—Part 21: Par...