本文讨论连续的图在几种图运算下的连续性，证明了几类特殊图是连续的，并得到它们的非正则和以及非正则强度的界。
In this paper, we mainly study consecution of consecutive graph under several operations. also we determine bounds of irregularity strength and (g) for there classes of graphs.
建立了非保守约束哈密顿系统的正则方程，在增广相空间中研究了系统的对称性与精确不变量。
Firstly, the canonical equations of nonconservative constrained Hamiltonian systems are established, and the symmetries and exact invariants of the systems in the extended phase space are studied.
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