因此，对于泡沫金属这种细观结构非均匀性比较严重的材料，仅仅使用初始密度尚不足以刻画其材料特征。
Therefore, for metal foam with highly complicated mesostructure heterogeneity, it is not enough to describe their material characteristics only using initial density.
该算法通过检测临界带特征矢量参数的距离变化确定初始分段边界，结合动态规划方法提高分段的准确性。
The initial segment is determined by detecting the distance changes of the critical feature parameter vector. With the dynamic programming method, the segmental accuracy is improved.
混沌既具有对初始条件敏感依赖性的“蝴蝶效应”特征，又具有在时间标度上的自相似性。
It has the sensitive dependence of the initial conditions which is known as "butterfly effect" and the self-similarity of time scale.
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