电压平衡继电器 [电] voltage balance relay

电平衡电秤 electric balance

电平平衡继电器 voltage balance relay

光电平衡电位计 [电子] photoelectrically balanced potentiometer

电流平衡继电器 current balance relay

电压或电流平衡 Voltage or current balance

补偿电流、平衡电流 equalizing current

电力电量平衡 electric power and energy balance ; electric power and electric energy balancing

电容电压不平衡 DC capacitor voltage unbalance