词汇	pentode discharge
释义	pentode discharge 五极管放电
随便看	single operator transformer single-operator transformer single operator validation Single Operator Validation System single-operator welder single operator welding machine single-operator welding machine single optical fiber single opt-in single option single oral dose single or a return ticket singleorder single order single-order single- order single-order device single order subtracter single-order subtracter single-order subtractor Single or double Single or double? Single or double plastic pulley Single or double wood pulley Single or dual side drive