Cable trunking systems and cable ducting systems for electrical installations -- Part 2-2: Particular requirements for cable trunking systems and cable ducting systems intended for mounting underfloor, flushfloor, or onfloor
电气装置用电缆槽系统和电缆管道系统第2-2部分:安装在地板下、平齐地板或地板上的电缆槽系统和电缆管道系统的特殊要求