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1·An approach is first posed by using gnomonic projection, based on the problem remaining unresolved, which is about the coating joint modeling and the joint overlap of spherical equilateral polygon.

针对球面等边多边形包覆拼接建模及出现拼接重叠等问题，分析了心射球面投射原理和共球面等边多面体的结构特征，提出了共球面等边多面体作心射球面投射的方法。