微分理想

Aiming at the problem of coarse footmark surface with severe noises, based on the in-depth analyzing geometrical relationship and differential characteristics of the three-dimensional footmark impressing surface, we propose a principal curvature and principal direction based impressing surface segmentation algorithm and a multi-scale fusion algorithm to segment the stereo footmark.

针对立体赤足迹表面粗糙、噪声严重的特点，深入分析立体足迹三维表面的几何关系和微分特性，提出了基于曲面主曲率和主方向的立体足迹压力面分割算法和多尺度融合算法，分割结果理想并与领域知识吻合。4。

On the basis of the principles of differential geometry, We have found the balanced eq ations of the ideal sliver and obtained the for,nulas for calculation of torsional moment .

本文建立了固定假捻器的简化模型，根据微分几何原理推导出理想纱条的平衡方程，并得到扭矩的计算式。

The content of thisresearch is as follows: According to the theories of differential geometry and gear meshin

主要研究内容如下：依据微分几何和齿轮啮合原理，用运动学法建立了理想状况下一次包络和二次包络 TI 蜗杆传动的啮合理论体系。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。