elliptical galaxy

Repairing method of mixer rotor copper tile ellipse;

密炼机转子铜瓦椭圆的修复方法

A Method of Node Dividing When Using Archimedes Spiral to Approaching Ellipse;

用阿基米德螺旋线逼近椭圆之节点划分方法

Study and application of drawing ellipse by using three given points;

由三个已知点画椭圆问题的研究及其应用

Mode conversion of an optical beam in a nonlinear weakly-guiding elliptic graded-index fiber;

非线性弱导椭圆梯度折射率光纤光束的模式变换

The Convexity of the Solutions of the Second Order Elliptic Equations;

二阶椭圆方程的解的凸性

Class fication of 3-Dimensional Elementary Groups and Representation of Special Elliptic Groups;

三维初等群的分类及特殊椭圆子群的表示

This paper discusses the problem concerned with a dog catching a rabbit before it enters a hole by applying computer-modeling method, obtains that the maximum boundary of starting points of the dog is an oval, and proves the conclusion on the basis of the theory of differential equation.

文献[1]案例34用计算机模拟的方法估测出猎狗在野兔进洞前追上它,其初始位置形成的最大边界是1个椭圆。