Because of the complexity and uncertainty inherent in spatial problems, the description of the spatial relationship often adopts qualitative methods.
由于空间问题固有的复杂性和不确定性，空间关系的描述普遍采用定性的方法。
This paper mainly researched on parametric description and meshing algorithm for the free surface of spatial structure with the program development.
本文主要研究了空间结构中自由曲面的参数化描述及网格划分算法，并编制了相应的程序。
Because of the complexity and uncertainty inherent in spatial space, the description and reasoning of spatial relation often use qualitative method in accordance with spatial cognition.
由于空间问题固有的复杂性和不确定性，空间关系的描述和推理普遍采用定性方法以符合人们的空间认知行为。
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