Naphthaometer
(石油产品)闪点测定仪
🗣️ 情景例句
He has the advantage of a good education.
他有受过良好教育的优势。
The fire is the test of gold;adversity of strong man.
烈火试真金，困苦炼壮士。
If you recognize yourself in this description,
如果你觉得你的情况是这样的话，