Thermionic tube
[电] 热离子管
🧩 词语组成解析
a. 热离子的\\n[电] 热离
🗣️ 情景例句
Maybe.
也许是。
Bill was very jumpy as he waited for the phone to ring.
贝尔忐忑不安地等着电话来。
The basic features include a crest (the highest point of the wave),
它们的基本特征包括浪峰（波浪的最高点）