1.Assembly 总成

A: What is an assembly exactly?
B: Assembly is a component made of more than one part.

A：总成到底是什么？
B：总成是由一个以上零件组成的部件。

2.A-Surface A级表面

A: What about A-Surface?
B: A-Surface is the surface of a product that a customer can see.

A：那A级表面又是什么呢？
B：A级表面是指顾客能看到的产品表面。

3.B-Surface B级表面

A: They also talk about B-Surface. What is that?
B: B-Surface is the surface of a component that you can't see in the normal service condition.

A：他们还说到B级表面，那是什么？
B：B级表面是在正常使用状态下看不到的部件表面。

4.Bushing 轴套

A: Self-lubricated bushing is very popular in western countries.
B: It's gaining market in China as well.

A：自动润滑轴套在西方国家很流行。
B：它也进入了中国市场。

5.Detailed drawing 零件图

A: What is a detailed drawing?
B: It's a drawing of an individual part or component.

A：零件图指什么？
B：是指单个零部件的图纸。