The algorithm has better results for preserving shape features of regular curves of polygon after simplification.

该算法对规则曲线多边形简化逼近前后的形状特征的保持具有较好的效果。

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Secondly, the key features of mechanical CAD models are very important semantic elements. However, most of algorithms result in the loss of key features of models after simplification.

其次，机械CAD模型的关键特征是十分重要的设计语义，但大部分算法在对模型进行大幅度简化后，往往会造成关键特征的丧失。

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Based on experimental models, the paper sets up three-dimensional steady heat transfer and flow physical model and mathematical model on a three polluting heat sources after simplification.

本文在实验模型的基础上，经简化建立了有三个污染源的置换通风三维稳定传热、流动的物理模型和数学模型。

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After all, to the extent that your program of comprehensive tax simplification and reductions translates into -- as you have put it -- a "refund" for every American who pays taxes, the effect will assuredly be to contribute to long-term economic growth.

CENTERFORSECURITYPOLICY: A Letter to the President