Amendment 1 - Cable trunking systems and cable ducting systems for electrical installations - Part 2-1: Particular requirements - Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings
修改件1.电气装置用电缆槽系统和电缆管道系统.第2-1部分:特殊要求.安装在墙壁和天花板上的电缆槽系统