首先提出了几何思维的概念，它是指以几何图形为符号语言。运用几何知识。采用必要的几何图形表现工具进行的思维过程。
The article puts forward the concept of geometrical thinking, which is a process to use the geometrical language, geometrical knowledge and essential geometrical tools to think.
在综合多种算法优点的基础上，首先提出了对三角面片的顶点按其切片方向进行从小到大排序，以快速滤除冗余顶点；
Firstly, sorting the apex of the triangular facets according to ascending order in their slice direction was proposed to filter out redundant vertex quickly;
在综合多种算法优点的基础上，首先提出了对三角面片的顶点按其切片方向进行从小到大排序，以快速滤除冗余顶点；
Firstly, sorting the apex of the triangular facets according to ascending order in their slice direction was proposed to filter out redundant vertex quickly;
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