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中文名称
英文名称
 - 直流配电线路 D.C. distribution circuit
 - 事故照明线路 Emergency lighting circuit
 - 接地或接零线路 Grounding or neutralizing circuit
 - 信号线路 Signal circuit
 - 有接地极的接地线路网 Grounding with grounding electrodes
 - 定子绕组测温回路 Temperature measuring circuit for stator winding
 - 接地信号回路 Grounding signal circuit
 - 闪光信号回路 Flashing-signal circuit
 - 开阀回路 Circuit for opening valve
 - 关(闭)阀回路 Circuit for closing valve
 - 开度计回路 Circuit for opening meter
 - 电流测量回路 Current-measuring circuit
 - 差动保护回路 Differental protective circuit
 - 过流保护回路 Over-current protective circuit
 - 合闸回路 Closing circuit
 

