n.【無線電】七極管。diode heptode: 二極七極管heptode converter: 五柵管混頻器五柵管變頻器heptode convertor: 七極變頻器heptode mixer: 七極混頻管triode-heptode: 三極七極管下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
