描述了过程链的模型设计，复杂的3 D几何数据模型的制作说明了这些过程链。
A formal description is designed for process chains, determined by the processing of complex 3d geometry models.
在分析地质剖面图的几何特征的基础上，建立了地质剖面图的数据模型。
On the basis of analyzing the geometry characteristic of geologic section, the data model of section is built.
当今的GIS系统的空间数据模型，主要反映地图制图领域的点、线、面对象管理与操作的几何知识。
However, the spatial data model of main GIS systems only reflect knowledge of management and manipulation objects in field of cartography, such as point, line and poly geometry objects.
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