Thermionic valve
熱離子管，熱陰極電子管
?? 牛津釋義
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 熱離子管.
?? 詞語組成解析
a. 熱離子的\\n[電] 熱離
valve
[v?lv]
n. 閥;真空管;（管樂器的）活栓;（心臟的）瓣膜;
vt. 裝閥于;以活門調節;
??? 情景例句
I researched it for over a year.
我研究了一年多。
This is a bread.
這是一個面包。
It was like being on a boat.
就好像是坐在一條小船上一樣。