椭圆的

This is a kind of evolutionary elliptic free boundary problems, in which the free boundary changes with time and at each fixed time the unknown function satisfies a boundary value problem for an equation of elliptic type.

详细本文分两部分。第一部分讨论拟定常电加工问题。这是一类发展型的椭圆自由边界问题，其自由边界依赖于时间的变化而不断演化，在每一固定时间，未知函数满足椭圆型方程的边值问题。

By comparing with the numerical results of different ellipticity, the ellipticity span to reduce the unevenness is got. The feasibility of elliptical inner layer is also got.

通过对不同椭圆度下的数值模拟结果比较，指出了降低不均匀度的椭圆度取值范围，分析了采用椭圆形加强套的可行性。

According to the concept of envelope evaluates equation of contour,the conclusion can be reached that the contour of torus is colse elliptc equidistant curve but is not ellipse.

根据包络的概念解出轮廓线的方程式，从而得出结论：圆环面的轮廓线是封闭的椭圆等距曲线，而不是椭圆。

To seek new infinite sequence exact solutions to nonlinear evolution equationsNEE(s, the formula of nonlinear superposition of the solutions of the second kind of elliptic equation are given, infinite sequence exact solutions to combined KdV with varible coefficients and forcible term is constructed with the aid of symbolic computation system Mathematica, which include Jacobi-like elliptic function solutions, infinite sequence soliton-like solutions and infinite sequence triangular function solutions.

为了获得变系数非线性发展方程的无穷序列精确解，给出第二种椭圆方程解的非线性叠加公式，借助符号计算系统Mathematica构造了带强迫项变系数组合KdV方程的无穷序列精确解。这里包括无穷序列类Jacobi椭圆函数解、无穷序列类孤子解和无穷序列三角函数解。

A two_dimensional photonic cystal with a lattice of elliptic air cylinders, which are filled with the EIT atomic vapor, in the KAs backgroud material is designed.

将一定密度的EIT原子气体充入以砷化钾为背景的椭圆孔柱中，计算表明该三角晶格排列椭圆柱光子晶体的光子带隙随外控制场而变。

In this paper,a threshold authentication scheme of ad hoe network based on elliptic curve is proposed,in using Lagrange Theorem to generate the group key and in using the digital signature algorithm based on elliptic curve to generate and merge the sub certificates.

论文提出一种基于椭圆曲线的门限身份认证方案，利用拉格朗日定理生成群密钥并利用椭圆曲线数字签名算法生成子证书并合成，该算法的安全性、高效率以及低计算复杂度特别适合Ad hoc网络移动自组的特点。

In order to fit the terrain condition, this dissertation uses Mathieu function and modified Mathieu function during the process of wave function expansion, also tries two different methods in small elliptical hill and high elliptical hill to overcome the barrier of composite boundary condition.

展开时为了克服混合边界条件带来的影响，在扁平椭圆地形和高陡椭圆地形中分别尝试了现有的两种方法并分析了其中存在的题目。

Then,we prove the convergence of the radial basis function for solving partial differential equations with projection methods .

本文讨论用MQ作为插值的径向基函数，对自共轭椭圆型方程进行插值，证明了插值系数的唯一性，并用投影法证明了用径向基函数解自共轭椭圆型方程的收敛性。

In 4 cases, the cavities were full of perilymph. We could find that the cavity was irregularly round-shaped, about 6.5 mm in diameter, with thin mucosa adhere to the cavity wall. In the center area, around the internal acoustic meatus fundus, there was a horseshoe- shaped cystic structure about 3 mm3, which was a combined structure of the saccule, utricle and scala media. In 1 case, there was little perilymph in the cavity, with about 1.5 mm thick soft tissue and granulation adhere to the wall. The saccule, utricle and scala media were not recognizable.

结果 对5例患者进行共同腔内耳蜗内镜检查，见4例腔内充满液体，吸出后腔壁有扉薄黏膜附着，腔呈不规则圆形，直径平均约为6.5 mm，中央区贴近内听道底部位见马蹄形或肾形囊腔，约 3 mm3大小，为内耳球囊、椭圆囊和中阶畸形融合的结构；1例腔内淋巴液较少，共同腔壁附着软组织和肉芽，约1.5 mm厚，无法将腔壁上的软组织与中阶、球囊、椭圆囊的结构区分。

Results Five cases with common cavity underwent micro-endoscopy during cochlear implantation. In 4 cases, the cavities were full of perilymph. We could find that the cavity was irregularly round-shaped, about 6.5 mm in diameter, with thin mucosa adhere to the cavity wall. In the center area, around the internal acoustic meatus fundus, there was a horseshoe- shaped cystic structure about 3 mm3, which was a combined structure of the saccule, utricle and scala media.

结果 对5例患者进行共同腔内耳蜗内镜检查，见4例腔内充满液体，吸出后腔壁有扉薄黏膜附着，腔呈不规则圆形，直径平均约为6.5 mm，中央区贴近内听道底部位见马蹄形或肾形囊腔，约 3 mm3大小，为内耳球囊、椭圆囊和中阶畸形融合的结构；1例腔内淋巴液较少，共同腔壁附着软组织和肉芽，约1.5 mm厚，无法将腔壁上的软组织与中阶、球囊、椭圆囊的结构区分。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。