In this paper, we describe spatial direction relation with direction relation matrix, discuss calculation for spatial directions similarity.
本文采用方向关系矩阵模型进行空间方向关系描述，讨论了空间方向相似性计算方法，提出了复杂情况下的匹配策略。
The study of the classification about spatial direction relationships may progressively solve the problem of establishing the formal direction relation model.
对空间方向关系的分类等基本问题的研究可望逐步解决其形式化描述模型的建立问题。
In this paper, spatial direction relation was described with direction relation matrix, calculation for spatial directions similarity in ordinary instance was discussed.
本文采用方向关系矩阵模型进行空间方向关系描述，讨论了空间方向相似性计算方法，提出了复杂情况下的匹配策略。
Because direction relation is the most useful spatial relation in People's Daily life, it is of great importance to research on how to effectively maintain spatial relation among objects.
由于方向关系是人们在日常生活中用途最为广泛的空间关系，研究在地图综合中如何有效维护目标间的方向关系具有重要的科学意义。
Research on spatial relation representation mainly includes spatial topological relation, spatial cardinal direction relation and spatial distance relation.
对空间关系表示的研究主要包括空间拓扑关系、空间方向关系、空间距离关系三大类空间关系表示的研究。
However, the changes on static stress attenuate quickly with distances and the spatial distribution has no relation with extension direction of earthquake rupture.
但静应力变化量随距离缩减快，空间分布与地震破裂扩展方向无关。
However, the changes on static stress attenuate quickly with distances and the spatial distribution has no relation with extension direction of earthquake rupture.
但静应力变化量随距离缩减快，空间分布与地震破裂扩展方向无关。
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