高手请进：CATIA的怪脾气

In the online document:
  
You will notice that Part Body and Body.3 are autonomous. The operations you would accomplish on any of them would not affect the integrity of the other one. Now, if you wish to combine them, refer to the tasks showing the different ways of attaching bodies: Adding Bodies, Assembling Bodies, Intersecting Bodies, Removing Bodies, Trimming Bodies.  
   
  
Structuring Your Design   
   Generally speaking, using Boolean Operations is a good way of structuring your part. Prior to designing, you can actually define the part's structure by associating a body containing geometry with empty bodies. Once these specifications are done, you can then concentrate on the geometry
  

在CATIA中能让曲面显示他的UV线吗

Freestyle workbenth
  
U, V Orders icon  from the Dashboard.

不听话，就揍它。

我的CATIA"U,V orders"怎么是灰色的