另一方面，每次用户点击树的一个节点，我们都用数据网格控制来罗列节点下的所有服务。
On the other hand, every time a user clicks one node of the tree, we will have a datagrid control to list all the services under this node.
为改善计算效率，提出了一种局部口面网格优化算法对射线追踪法进行改进。
A new technique named local aperture grid optimization arithmetic was presented to improve the efficiency of the classical method.
通过察看目标网格上的一个面，比如窗户那里的面，你将可以看到在你源网格的每一个多边形或多或少的指向你的方向。
By looking through a face on the target mesh, as if it where a window, you should be able to see every polygon on your source mesh pointing more or less in your direction.
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