Invertibility
[计] 可逆性
🗣️ 情景例句
I've been in China to work on the new project.
我一直在中国搞一个新项目。
What do you think about it?
你对此怎么看？
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。