泵电源电路的运行
pump power circuit operation
起动机电磁线圈电源电路
starter solenoid power circuit
应急电源电路断路器
emergency source circuit breaker
直流电源电路
Direct current of stable voltage circuit
LED路灯电源
LED street light power supply
备用电源断路
auxiliaries-supply circuit-breaker
备用电源断路器
auxiliaries-supply circuit-breaker
泵电源反馈电路
pump power flyback circuit
标准电源电压不足时的印刷电路板
normal source undervoltage pc card
单回路有源RLC电路
sole-loop active RLC circuit