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.
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