Draft Document - Cable trunking and ducting systems for electrical installations - Part 2-1: Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings (IEC 23A/743/CDV:2015)
文件草案.电气装置用电缆槽和管道系统.第2-1部分:安装在墙壁和天花板上的电缆槽系统和电缆管道系统(IEC 23A/743/CDV:2015)