Diffractometers
(diffractometer 的复数) n. [光] 衍射计
🗣️ 情景例句
Your name?
你的名字？
He already has a phonograph,but he doesn't have a radio yet.
他已经有一架留声机，但是他还没有收音机。
Do you mind if I smoke?
我吸烟你介意吗？