Summarized the basic theory of one kind of graph,researched the algebraic property of the graph.Discussed the adjacency spectrum and laplacian spectrum of the graph and analyzed the distribution of the Laplace root.% 总结一类图的基本结论，研究图的代数性质。探讨了图的邻接谱与图的拉普拉斯谱，并分析了拉氏根的分布。
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