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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This catalyst adopts the new mesopore matrix and optimized multifunction activity components. With the special process, it can reach the expected production distribution.

该催化剂采用了其有介孔结构的新型基质及优化的多活性组元配伍，与其特定的配套工艺协同作用，可达到上述预期的产品分布目标。

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