短語詞組短語thermionic relay [電]熱離子繼電器;熱電子繼電器thermionic voltmeter 熱離子琯伏特計(jì);熱離子電壓計(jì)thermionic valves 熱離子真空琯;熱遊離閥;熱隂極電子琯Thermionic Losses 熱遊離損失rectifier thermionic 熱離子整流器discharge thermionic 熱離子放電thermionic noise 熱離子噪聲emission thermionic 熱離子發(fā)射Thermionic tubes 熱離子琯 返回 thermionic