【机械工程】电路元件，电子光学的

semi-controlled three-phase bridge rectifier circuit【电】

emergency protective circuit arrangement responsive to difference

电路或发电机的\nshort-circuit operation【电】

transistor circuit【电子】;transistor circuitry【电子】;transistorized circuit【电子】

regenerating circuit【电子】;regeneration circuit【电子】;regenerative circuit【电子】

electrothermal, circuit breaker protective switch

vacuum-tube clipping circuit【电子】

small-signal open-circuit output impedance