第三部分主要研究双圈图的谱矩的基本性质和谱矩序列排列的一些规律性结论。
Section Three provides the mainly results on the spectral moment of bicycle graphs and its lexicographical order.
第二部分我们给出了本论文所涉及的基本概念，研究了图的改变与谱矩序列排列之间的关系。
Section two is about some concepts and lemmas involved as follows. Section three provides the mainly results on the spectral moment of bicycle graphs and its lexicographical order.
给出了序列的矩与投影度的概念和数学描述，并着重研究了其运算性质。
The concepts and mathematic descriptions of moment and projection for general discrete sequence are also proposed. Their operation rules are studied in details.
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