介数通常分为边介数和节点介数两种，其中节点介数定义为网络中所有最短路径中经过该节点的路径的数目占最短路径总数的比例，而边介数定义为网络中所有最短路径中经过该边的路径的数目占最短路径总数的比例。
提出线路的电气介数并将其用于电力系统关键线路识别。
Electric betweenness and its application in line identification in the power system is presented.
通过与层次聚类算法的比较，证明边介数聚类算法在肿瘤基因功能模块聚类方面具有一定的有效性和实用性。
In the end, through a real example the shortest route, its length and betweenness were worked out according to the algorithm.
最后用DSC进行检测，考察了柔性链上碳原子数对介晶相态、清亮点温度和相转变温度的影响。
The influence of the number of carbon atoms in flexible spacer on their mesomorphic state, clear temperature, phase-transition temperature is studied by using of DSC.
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