Malcomising
不锈钢表面氮化; 氮化热处理
🗣️ 情景例句
Pleased to meet you.
很高兴遇见你 。
There is something in what she said.
她说的话里有些重要的内容。
Since its discovery, it has become a sort of potholers' Everest.
自从被发现以后，这个洞成了洞穴探险者的珠穆朗玛峰，