本研究采用了文献综合法和实例论证法。
Literature General method and examples of proof method are employed in this research.
在历史学界很盛行事实论证法，这是非常必要的。
The very popular in academic history factual proof law, this is very necessary.
由此结合尺度论证法得到平面光滑简单闭凸曲线在上述曲线流下的渐近性态。
Moreover, by combining the estimate with the rescaling argument, obtains the asymptotic behaviour of the flow with initial simple closed convex curves.
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