微分几何

The generalized magnetostatic field reciprocity theorem is deduced by the language of differential forms.

应用微分几何语言导出了广义静磁场互易定理，并应用该定理推导了漏磁无损检测数值分析中的富内德和蒙积分方程和线圈电感增量公

Based on the differential geometry theories , two kinds of the regular polyhedron are selectedas the new shapes of grinding media .

以微分几何理论为基础，选择了两种正多面体作为研磨体的形状，与球形研磨体进行了研磨效果的比较。

Within differential geometry are the concepts of fiber bundles and calculus on manifolds , in particular, vector and tensor calculus .

微分几何包含这样的概念：纤维束和流形上的微积分，特别是矢量与张量微积分。

After reviewing the basic concept of general relativity, this introduction discusses its mathematical background, including the necessary tools of tensor calculus and differential geometry.

在审查了广义相对论的基本概念，讨论了其今年推出的数学演算，包括张量和微分几何的必要工具的背景。

In this paper,based on principles of differential geometry, authors illustrated the conditions of forming false twist and rules of friction's variations,abtained simplified formula for calculation of torsional moment .

本文应用微分几何的原理详细论述了假捻产生的条件及摩擦力的变化规律，推导出纱条扭矩的简化计算公式。

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。

Further, the condition and method of design of decentralized stabilization by linear state feedback for nonlinear large scale composite systems are obtained by algebraical and analytical method in this dissertation.

本文的研究表明，采用微分几何方法和分析方法结合的方式研究非线性组合大系统的分散镇定问题其结果明显好于单独使用其中任何一种方法所得到的结果。

In this paper,using the classification for the point of general surface in differential geometry,a new combination that relies on the type of point on real conicoids is studied,and then can know more about the shape of conicoid.

利用微分几何中对一般曲面上点的分类来研究实二次曲面依点的类型的又一重要新组合，从而对二次曲面的形状有进一步的认识。

The surface of image can be looked as a curved surface, and we can simulate a conicoid function in local area. Based on this function we can estimate the gradient and the curvature of the curved surface points, and set proper thresholds of gradient and curvature, we can detect the centre lines of roads with correlative process including removing small areas, area growth, thinning, etc. Lastly through seting proper thresholds of the gradient and the curvature again, the original road junctions can be detected and then verified by the road lines detected formerly.

基于微分几何的道路交叉口识别方法：把影像的灰度表面看作是一个曲面，在局部区域内拟合一个二次曲面函数，通过该函数来估算梯度和曲率并设定合适的梯度和曲率阈值来检测道路中心线，并进行相关处理，例如去除小区域、区域增长、细化等，然后再设定合适的梯度和曲率阈值，检测出初始道路交叉口，并用检测出来的道路来进行确认。

Firstly thesampling points of tooth surface measurement, mathematics model for spiral bevel andhypoid gear's fitting tooth surface is formularized reversedly by applying principle ofdifferential geometry and Ferguson parameter spline function.

此算法首先通过齿面离散或测量点，利用微分几何及 Ferguson 样条函数反求构造出螺旋锥齿轮齿面。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。