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1·Based on social network, the paper analyzes knowledge body degree centrality, betweenness centrality and closeness centrality impacting on team knowledge diffusion.

利用社会网络的研究思路，剖析知识主体的点度中心性、中间中心性、接近中心性对团队知识扩散的影响。

2·The author thinks that nodes centrality degree index of social network can be used to analyze the competitor.

本文认为可以用人际网络节点的中心度指标来分析竞争对手。