应用拓扑图论的分割理论进行了系统划分模型的研究，并对其作了适应SOC分割的改进；
The partition theory of graphics is applied in studying on system partition theory and it is improved on to fit SOC system paration.
然后，通过研究割的性质，得到拓扑图论中的一个重要性质，即不可分离圈不能由若干可分离圈生成。
Secondly, by the properties of co-cycles, we find that any separating cycle cant be generated by separating cycle.
针对工程分析用的网格模型，以图论中的拓扑图为基础提出了一种空间网格面的染色算法。
Aimed at the mesh model used for engineering analysis, a coloration algorithm based on the topologic graph is presented.
利用图论知识，可将多自由度多行星架周转轮系的复杂结构简化为拓扑图。
The complicated structure of the epicyclical gear train with multidegrees of freedom and planet carriers could be predigested into the topological graph by adopting the knowledge of graph theory.
利用图论知识，可将多自由度多行星架周转轮系的复杂结构简化为拓扑图。
The complicated structure of the epicyclical gear train with multidegrees of freedom and planet carriers could be predigested into the topological graph by adopting the knowledge of graph theory.
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