Morgoil
摩戈伊尔铝硅锡轴承合金
🗣️ 情景例句
No smile, no surprise.
不笑 ，就不给你惊喜。
Let me introduce myself.
让我自我介绍一下。
where chance discoveries play a much larger part than they do in physical and mechancal industries.
同物理和机械工业相比，化学工业中偶然发现的机会要多得多。