常見例句雙語例句The operating principle and the use of residual current protective device is introduced, and its selection, installation and limitation are commented.介紹了剩余電流動作保護(hù)器的工作原理及其用途，敘述了剩余電流動作保護(hù)器的選型、安裝及其局限性。d.wanfangdata.com.cn 返回 residual operating current