Or, if you have a surface that is not like closed or anything but maybe you will want the flux going up through the region.
或者说，有一个不封闭的曲面,习惯上你会倾向于让通量向上通过这个区域。
The interpolation face of coal seams is trimmed by boundary and the closed polygons of up and down faulted blocks to form the deposit interface model. The earths surface model is founded.
地质界面模型是由煤层的顶底板插值曲面经煤层边界和断层曲面裁剪而成的，地表面模型是对原始地表数据和矿坑数据进行三角剖分得到的三角形网格。
The quadrilateral grid graph of closed surfaces was obtained through surface slicing, offset point picking up, ordering of point array, 1d interpolation, and data merging.
经过曲面切片、型值点提取、点列排序、一维插值、数据融合，得到闭曲面四边形网格图。
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