相似多边形 meaning in English

shape similarity
similar polygons

On the base of determination of corresponding points between adjacent sections , dissimilar segments are separated to construct spatial dissimilar polygons . then triangular mesh interpolating the cross sections are obtained by tiling the dissimilar polygons and similar segments
在确定相邻层轮廓对应点的基础上，将不相似部分分离出来并跟踪不相似部分构成不相似多边形，然后分别对相似部分和不相似部分进行三角化，得到三角网格模型。