Picknometer,pycnometer
[化] 比重瓶; 比重管
🗣️ 情景例句
Strike while the iron is hot.
趁热打铁。
We'll have a soap opera series on TV this week.
这周末我们会在电视上看到一系列肥皂剧。
It's a dictionary.I hope it'll help you.
是本词典。我希望它能对你有所帮助。