EN 50085-2-1：电气设备用电缆干线系统和电缆管道系统-预期安装在墙和顶棚上的电缆干线系统和电缆管道系统
EN 50085-2-1：Cable trunking systems and cable ducting systems for electrical installations Part 2-1: Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings
