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。