英语词汇thermionic valve的意思、用法及释义-英汉双解词典

单词	thermionic valve
释义	thermionic valve (US ,thermionic `tube), vacuumtube in which a flow of electrons is emitted by heated electrodes, used in the receiving of radio signals, etc 热离子管.
随便看	graciously graciousness gradation grade grade crossing grade school grade teacher gradient gradual gradually gradualness graduate graduated pension graduation Graeco- graffiti graft grail grain -grained grainy -gram gram grammar grammarian

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