[名词解释] 接地装置(earthing system)
[名词解释] 保护接地(protective earthing)
[名词解释] 接地母排(earthing bar)
[名词解释] 接地线(earthing conductor)
[主观题]价格系统(Price system)
[名词解释] 保护系统 protection system
[名词解释] 价格系统(Price system)
[名词解释] 调车系统 system of shunting
[名词解释] 安全系统 safety system
[名词解释] 安全执行系统 safety actuation system