例句 /

Abstract: The operating principle and the use of residual current protective device is introduced,and its selection, installation and limi tation are commented.

Abstract: The operating principle and the use of residual current protective device is introduced,and its selection, installation and limi tation are commented.

文摘:介绍了剩余电流动作保护器的工作原理及其用途,叙述了剩余电流动作保护器的选型、安装及其局限性。