关于surface

hunanyangdong

对于外表面1，直接选择Tools----surface建立，可以在点creat之前选择面，也可以在点creat之后选，而对于用Model changge，remove形成的表面2（包括所有其它内部线或面），要创建surface的话，必须先选择面，在点creat，不知道这两种surface有什么区别？因为用外表面1可以直接创建荷载，而开挖后的表面则不能直接加荷载

hunanyangdong

我知道了，需要调用选择内部面功能
6.2.10 Selecting interior surfaces

You can use the selection tools to select an interior surface of a model; for example, when you create a surface or when you select a region using the solid offset mesh tool.
To select an interior surface:
1.        In the Selection toolbar, toggle on the Select From Interior Entities tool  .
Note:  The Select From Interior Entities tool is hidden by default. For more information, see “Using toolboxes and toolbars that contain hidden icons,” Section 3.3.2.
2.        Select the interior surface from the viewport.

gsui

没看明白如何选择内部面的