Picknometer,pycnometer
[化] 比重瓶; 比重管
🗣️ 情景例句
And good stuff, too.
而且都很精采。
Waste of time is the most extravagant and costly of all expenses.
浪费时间是一切花费中最奢侈豪华的费用。
Jim ! Jim ! It's time to get up !
吉姆，吉姆，该起床了！