Thermionic valve
热离子管，热阴极电子管
📖 牛津释义
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.
🧩 词语组成解析
a. 热离子的\\n[电] 热离
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
and I didn't know what it would be like.
而且我也不知道将会是怎么一个样子。
An honest man's word is as good as his bond.
诚实人的话像他的契约一样靠得住。
Of course. When I got there, you had already started playing. So you didn't see me.
当然啦。当我到那里时，你们已经开始踢球了。因而你没看见我。