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。