在分析油田开发前后生态系统的非同构性后，探讨了用突变理论解决因子预测的可能性。
The author of this paper point out that the necessary and possibility for the predication of environmental factor by catastrophe theory in EIA system.
提出基于组合计数原理的递归算法，用于多模块变形机器人的非同构构形的计数，并根据构形矩阵对对机器人的对称构形进行判断。
According to combination principle, recursive algorithm has been proposed to enumerate and decide the non-isomorphic configurations and non-isomorphic symmetry configurations.
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