Picknometer,pycnometer
[化] 比重瓶; 比重管
🗣️ 情景例句
In about 30 minutes.
大约半小时后。
Cut short the nonsense and return to one's muttons.
闲话少说，言归正传。
On the last day I made a big decision.
到了最后一天，我作出了一项重大决定。