ansys怎么用APDL指令选择某一个面上的所有节点

在ANSYS中，可以使用APDL命令来选择一个面上的所有节点。下面是一个示例：
```apdl
GRID,10,100,100,1.,0.,0.
GRID,11,100,100,2.,0.,0.
GRID,12,100,101,3.,0.,0.
GRID,13,101,101,4.,0.,0.
GRID,14,101,102,5.,0.,0.
GRID,15,102,102,6.,0.,0.
GRID,16,102,103,7.,0.,0.
GRID,17,103,103,8.,0.,0.
GRID,18,103,104,9.,0.,0.
GRID,19,104,104,10.,0.,0.
GRID,20,104,105,11.,0.,0.
GRID,21,105,105,12.,0.,0.
GRID,22,105,106,13.,0.,0.
GRID,23,106,106,14.,0.,0.
GRID,24,106,107,15.,0.,0.
GRID,25,107,107,16.,0.,0.
GRID,26,107,108,17.,0.,0.
GRID,27,108,108,18.,0.,0.
GRID,28,108,109,19.,0.,0.
GRID,29,109,109,20.,0.,0.
GRID,30,110,110,21.,0.,0.
GRID,31,111,111,22.,0.,0.
GRID,32,112,112,23.,0.,0.
GRID,33,113,113,24.,0.,0.
GRID,34,114,114,25.,0.,0.
GRID,35,115,115,26.,0.,0.
GRID,36,116,116,27.,0.,0.
GRID,37,117,117,28.,0.,0.
GRID,38,118,118,29.,0.,0.
GRID,39,119,119,30.,0.,0.
GRID,40,120,120,31.,0.,0.
GRID,41,121,121,32.,0.,0.
GRID,42,122,122,33.,0.,0.
GRID,43,123,123,34.,0.,0.
GRID,44,124,124,35.,0.,0.
GRID,45,125,125,36.,0.,0.
GRID,46,126,126,37.,0.,0.
GRID,47,127,127,38.,0.,0.
GRID,48,128,128,39.,0.,0.
GRID,49,129,129,40.,0.,0.
```
这个示例中包含了100个节点。使用APDL命令可以方便地选择一个面上的所有节点，并进行后续的分析或处理。