本文针对退化的情形进行研究，并使用外幂与外微分形式，使证明更加容易。
In this paper, we study the generate case by using exterior power and exterior differential forms, which will make the prove process easier.
分析结果表明：除幂硬化材料的极限情况——理想塑性外，此变换有效。
Analytical results show that the transformation is effective except for a special - limit case of power hardening media-the ideal plastic materials.
提出了反射镜后表面外冷却临界厚度的概念，并得到一个关于多脉冲积累效应的幂定标关系。
A concept about critical cooling thickness of mirrors has been suggested, and a scaling law of multi-pulse accumulative effects has been obtained.
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