模型把子区域地形几何数据定义为单纯复合形集,按地形变化时间顺序和空间关系组织成一个偏序集。
The model is based on a collection of a divisional terrain data defined as simplicial complexes arranged into a partially ordered set by time and space.
如果作者按照空间顺序展开段落,他就会依据位置及相互间关系来安排细节。
If a writer follows a spatial paragraph development, details are arranged according to their location and their relationship to each other.
方向关系描述了对象间的空间顺序关系。
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