电动旁路阀门的改造
Improvement of electric-driven bypass valve
电路节电改造
power-saving reform of circuit
电气控制回路改造
Electric control loop transformation
充电电路部件
charging circuit component
充电电路的运行
charging circuit operation
充放电电路
charging and discharging circuit
带电电路
alive circuit
alarm circuit
amplifier noise-equivalent circuit
alladvised
电动机的节电改造
Energy-Saving Reconstruction of the Motor