对于给定的网格曲面，首先将其转换为正方形面元表示，然后对正方形面元进行编码压缩。
First we get the square surfel representation to replace triangular mesh, Then encode the square surfel with octree linear code.
一个十面体的面具有六个相等的正方形和八个相等的正三角形。
A cuboctahedron has as faces six equal squares and eight equal regular triangles.
假设该接触面为一个边长为0.75米的正方形。
Suppose the contact makes a square about 0.75 meters on a side.
正方体每个面都一定是正方形。
该模型采用扇形网格和正方形网格相结合，以扇形网格为基本框架，而将面源区和近源区划分成正方形网格。
In the model, the basic grids are sectorial ones, but the source area and near source area is regularly shaped to rectangular grids.
结果表明正常复眼由数千小眼集合而成，小眼面为正方形，呈网格状整齐排列，表面清洁饱满，没有任何毛状突起。
The results show that a compound eye is composed of some thousands of ommatidia which present square in shape on the surface and seem grid and very clean and full without any gaily.
水槽直管段为正方形，弯管段内侧弯面及外侧弯面是专门计算设计的。
The shapes of the curved walls of the bent section are designed according to theoretical analysis.
水槽直管段为正方形，弯管段内侧弯面及外侧弯面是专门计算设计的。
The shapes of the curved walls of the bent section are designed according to theoretical analysis.
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