Based on the relation of geometric objects and terrain triangular irregular network, the various geometric objects are divided into two parts in this paper.
根据地物模型与地形三角网关系，将种类繁多地物模型划分为两大类。
Based on the relation of geometric objects and terrain triangular irregular network, the various geometric objects are divided into two parts in this paper.
根据地物模型与地形三角网关系，将种类繁多地物模型划分为两大类。
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