Population inversion
[化] 粒子数布居反转; 粒子数反转; 布居反转
🧩 词语组成解析
inversion
[in'və:ʃən]
n. 倒置;（尤指词序）倒装;转化;（染色体的）倒位;
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
I'm just kidding.
我指使闹着玩的。
Where?
在哪儿？