AC self-rectifying wet-type valve 交流自整流湿式整流管

self-rectifying charging unit 自整流充电装置

self-rectifying high pressure mercury lamp 自整流高压汞灯泡

self rectifying circuit 自整流电路

self-rectifying tube 自整流管

self-rectifying alternator 自整流式交流发电机

self rectifying prediction 自校正预报

self-rectifying X-ray tube 自整流X射线管

ac self-rectifying wet-alve 交流自整流湿式整流管