cathodes正极cathoden.阴极cathode ray output[计] 阴极射线输出cathode-ray beam电子束,阴极射线束cathode supporting阴极支承cathode modulinous[电] 阴极调制cathode modulation阴极调制,阴极灯cathode-rad tube[电] 阴极射线管cathode emissivity阴极发射率cathode dark space阴极暗区cathode choke coil[电] 阴极抗流线圈cathode activation阴极激活