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。