部分零件导入后变成了好多零件，用unfreeze功能将他们重新合并，出现网格划分出错不知道是不是跟这个也有关系。

网格划分的方法采用的自动划分。

在geometry中看到，除了一个零件前是√，其余都是半勾。

划分结果：

错误提示如下：

The mesher restarted at a higher relevance in order to achieve a successful, quality mesh.

One or more entities failed to mesh. The mesh of the bodies containing these entities may not be up-to-date.  However, meshing might be successful on the other entities.

The surface mesh is intersecting or close to intersecting, making it difficult to create a volume mesh. Please adjust the mesh size or adjust the geometry to fix the problem.

A mesh could not be generated using the current meshing options and settings.