When a mesh is visualized in a geometrical space, the 1-D mesh is connecting line-segments, the 2-D mesh is connecting polygons, and the 3-D mesh is connecting polyhedrons.

• 当把一个网格在几何空间上可视化时，我们可以看到一维网格指被连接的线段，二维网格指被连接的多边形，三维网格则指被连接的多面体。