Idfg
abbr. intracavity CW difference frequency generation 内腔连续波差频振荡
🗣️ 情景例句
Yes. I'm sorry, but how do you spell your last name, sir?
好的，不过对不起，先生你的姓怎么拼？
Geographically,this country is located in the southern hemisphere.
这个国家在地理上位于南半球。
I have a good idea!
我有一个好主意。