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
My head is killing me.
我的头疼死了。
Is it true that manufacturing of automobiles is a major industry?
汽车生产是主要工业是真的吗？
the mind catches hold of something and will not let it go.'
此时脑子纠缠住了某种东西又不肯松手。"