As to representation of triangulated irregular network(TIN),a dual-circulation linked list structure is proposed,this structure can conveniently express edge and plane topology information of triangulated irregular network,and polygon structure.
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The project with the ground in the shape of a twelve-sided polygon and of concrete structure is unfinished and has been abandoned for many years due to economic crisis.
该项目的地块是十二边形，带有未完成的混凝土结构，由于经济危机已被遗弃多年。
According to the user's requirements for map digitization and data structure, this paper designs a "polygon-chain" combined sampling method and a sampling program.
本文从用户对地图数字化采样工艺和数据结构的需求出发，设计了“图斑——链”综合采样方法，并编写了与之相应的程序。
The front end of the speed reduction crankshaft (1) and the tail end of the main shaft (3) are made by adopting the polygon structure and are same as the inner structures of the grooves (5) and (6).
减速机轴(1)前端与主轴(3)的末端均采用多边形结构构成，并且与凹槽(5)及凹槽(6)的内部构造相同。
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