Very little notes among the objects 'topology relations and so on.
很少注意到对象之间的拓扑关系等。
In practice, the logic relations can help to simplify the resource definitions, while the topology relations can help to partition and combine these monitoring systems.
具体实现中，逻辑关系有助于简化资源定义，拓扑关系有助于系统部件分布和相互组合。
Through the intersection test of the triangles, the intersecting lines could be obtained and the intersecting lines topology relations with the triangles could be established.
接下来求出两相交三角形之间的交线，建立与三角形的交线拓扑关系；
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