根据STL文件的特点，建立了一个有效的截面三角剖分算法。
An effective triangle -meshing algorithm of sections based on STL file form at is set up.
首先生成二维网格基面，选取三维场域的最复杂截面进行二维剖分，然后再将二维网格拉伸成三维网格。
A double-dimension grid is formed first, then the choosing complicated cross section is analyzed and last the three-dimension grid is formed by stretching the double -dimension grid.
在I CT切片重构模型的可视化中，为了分析重构模型的任意截面形状，并且观察该截面的内部结构，需要对重构模型进行剖切。
In order to analyze any section shape of reconstructed model and observe inner structure in the visualization of ICT slice reconstructed model, the reconstructed model is cut by the plane.
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