Thermionic cathode
[电] 热离子阴极
🧩 词语组成解析
a. 热离子的\\n[电] 热离
cathode
[['kæθəud]]
n. 阴极\\n[化] 阴极
🗣️ 情景例句
I'm concerned.
我很担心。
He who sees through life and death will meet with most success.
看破生死者，大多会成功。
I'm afraid the item you substituted didn't work.
你这代替品恐怕不能用。