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横截面是什么
更新时间: 2021-01-09 19:22:17  

1、横截面定义:垂直于梁的轴向的截面形状。不是所有光滑流都有横截面,一个明显的必要条件是流不能有奇点。横截面是由庞加莱 (Poincare,(J.-)H) 引进的。通过横截面可以建立光滑流与微分同胚生成离散动力系统之间的联系。

关键词: 截面 什么

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