Thermionic emission
[化] 热电子发射\\n[医] 热离子发射
🧩 词语组成解析
a. 热离子的\\n[电] 热离
🗣️ 情景例句
He accepted an offer of help.
他接受了援助的建议。
She began playing the violin when she was nine.
九岁的时候，她开始拉小提琴。
The farmer cut off part of his foot to make sure he could not run away again.
农场主把他的一只脚砍掉了一块，以确保他不能再逃跑。