高手请进：CATIA的怪脾气

一个基于面的parallel线（被分为2断）无法用捕捉端点，
后用near definition取出一条线仍无法捕捉其端点

我的CATIA"U,V orders"怎么是灰色的

不听话，就揍它。

Freestyle workbenth
  
U, V Orders icon  from the Dashboard.

在CATIA中能让曲面显示他的UV线吗

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
  

谢了，能说说insert body的作用吗

insert--body.

还有几个实体的问题困扰我：
1 作两个实体，如果有重叠部分，CATIA就自动执行布尔操作相加，能不 能让几个实体单独存在啊
2  几个存在距离的实体，好像不能放在不同的层里，不能隐藏一个，显示一个，好像只能同显示或同隐藏

应该没办法解决了，这样也有其好处，就是任何一个物体都可以在tree 里选取，所以做同样一个东西，catia 的菜单常常比其它软件的tree 长，我觉得catia使用方便，但不够简洁，太消耗资源。