In this paper, based on average Eucli dean distance coefficient, using UPGMA, Q cluster analysis for karyotype of 12taxa in genes glycyrrhiza L. have been conducted.

在平均欧氏距离系数基础上，运用UPGMA法，对甘草属12个类群的核型资料进行了Q型聚类分析。

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Some basic concepts of the complex network are introduced in this paper, such as the average path length, cluster coefficient, distribution, etc.

本文首先介绍复杂网络中的几个基本概念，平均路径长度，群系数，度分布等。

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