椭圆的

The aim of this paper is to study the existence of solution and multiply results for quasilinear elliptic system in bounded domain and the whole space, semilinear elliptic equation in two dimension space, second order nonlinear difference equation by variational methods. The main results are listed in the following:1. An abstract compactness theorem is proved, and then, under weak Boccardo and De.

本文主要利用变分法，分别研究了有界区域和全空间上拟线性椭圆型方程组、二维空间上半线性椭圆型方程和二阶非线性差分方程问题的解与多重解的存在性，具体内容如下： 1。

A vertical fractured well can bring out two-dimensional flow in the direction of normals of developing ellipse — conjugate ellipse isobar and hyperbola streamline bunches with the two ends of the fracture as their focuses.

垂直裂缝井采液时诱发地层中的平面二维椭圆渗流，形成以裂缝端点为焦点的共轭等压椭圆和双曲线流线族。

With the emphasis of the algorithms for the fast implementation of the elliptic curve, the correlative content of elliptic curve cryptosystems theory is introduced.

本文主要介绍了椭圆曲线公钥密码的相关内容，在这一基础之上重点研究了椭圆曲线公钥密码快速实现的方法。

In a kind of quasi dissipative systems the disappearance of some elliptic periodic orbits and the elliptic islands around them via a collision with the discontinuous border of the system function can be observed.

在一种类耗散系统中观察到了椭圆周期轨道及其周围的椭圆岛与映象不连续边界碰撞而消失的现象。

In using the elliptic curve cryptosystem, it is important to select a secure elliptic curve.

在使用椭圆曲线密码系统时，挑选一个安全性高的椭圆曲线是很重要的。

The third section of this paper solves the existence and uniqueness of the positive entire solutions to a certain second order nonlinear elliptic equation.

第三节讨论一类非线性椭圆型方程正解的存在性以及唯一性。这些结果也是解决非线性椭圆型方程组问题的基础。

We organize it along the following lines: In Chapter 1 we discuss the fixed boundary problem with elliptic equation or elliptic equations system.

具体内容由以下三章组成：第一章我们讨论的是具有固定边界的椭圆型方程问题和椭圆型方程组问题。

The third section of this paper solves the existence and uniqueness of the minimal positive entire solutions to a certain second order nonlinear elliptic equation.

第三节讨论一类非线性椭圆型方程全局最小正解的存在性以及唯一性。这些结果也是解决非线性椭圆型方程组问题的基础。

Highly accurate approximations of the elliptic function are obtained in this paper through the use of Gauss transformation, which could not be obtained by the traditiona...

运用高斯变换法求椭圆函数的高精度近似值，解决了过去沿用椭圆积分表达不到精度要求的困难。

Some new elliptic periodic solutions and soliton solution of variable coefficient KdV-MKdV equation with three arbitrary functions by are found Jacobi elliptic function expansion method.

运用Jacobi椭圆函数展开法求得了具有3个任意函数的变系数KdV_MKdV方程的新椭圆周期解及孤立波解。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。