对这三个面的划分是为了提高网格的密度，对面网格的划分只能在整体的XY平面内进行，所以不能对其他的面进行网格划分来作为体扫掠的依据。这个划分不能得到和右半部分的划分一样的在每条边上10等分，要想得到10等分的划分网格，必须先将角点处的线5等分，然后将角点的面连结，再用体扫掠即可。-These three faces division is to increase the density of the grid, the grid can only be divided across the whole of the XY plane, it can not be meshing on the other side as a body sweep basis. This division can not get the right part of the same and divided in 10 equal portions on each side, in order to get 10 aliquots of mesh, you must first corner point line 5 equal portions, and then the corner points of the surface links , then swept to the body.