Cementation steel
[化] 渗碳钢
🧩 词语组成解析
n. 水泥接合, 黏结, 胶结\\n[医] 粘固[作用]
steel
[stil]
n. 钢，钢铁;钢制品;兵器;钢铁工业;
vt. 包上或镀上钢;使坚定;
adj. 钢制的;钢铁业的;坚强的;[色彩]青灰色的;
🗣️ 情景例句
Sounds interesting.
听起来很有趣。
The doctor said I looked pale and tired.
医生说我看起来苍白和疲倦。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，