The basic relation matrix is automatically generated finally through data transform by using the adjacency matrix.
通过数据转化，利用邻接矩阵生成管网基本关系矩阵。
The Adjacency Matrix of the Directed Graph is easy to build, but the reach-relation of factors is more useful when building the structure model.
有向图的邻接矩阵比较容易建立，但是在建立结构模型时，更有用的是要素间的可达关系。
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