椭圆的

Based on theoretical study and test, by using finite element numerical method, the force and deformation of casing with cement sheath under nonuniform load is analyzed, and the effect of two sensentive parameters, the nonuniform load ratio and ellipticity, on the failure of casing is discussed.

在已有的理论研究与试验工作的基础上，采用有限元数值方法，分析计算了受非均匀地应力作用下套管-水泥环结构的受力与变形，讨论了两个敏感参数——非均匀载荷比和套管椭圆度对套管失效的影响问题。

The influence of expanding-die diameter on the quality of finished products, such as the uniformity of deformation, the contour of a cross section and its ellipticity as well as the wall thickness of finished products, is discussed specially; a conception of relative radius of punch and the design criterion of it are given in this paper.

本文专门论述了机械扩径模具直径对成形品质的影响，提出了相对凸模半径的概念，系统分析了它对变形分布、成形件轮廓形状、椭圆度和壁厚的影响。

In the construction of a long distance pipeline with high pipe material hardness, thin pipe wall and big caliber ellipticity,general pipe external aligning devices are difficult to comply with quality standard.

随着长输管道的发展，大口径管道日益增多，大口径管道的管口椭圆度相对较大，其材质硬度高，因此组对施工的难度加大。

However,their fluorescence emission intensities decreased by 16-22% and the ellipticity values at the negative trough increased by 13-16% for the mutants,indicating that the conformation of prochymosin was perturbed after mutation.

但它们的荧光强度下降了16-22%，在负谷中的最大椭圆值增加了13-16%，表明突变确实给凝乳酶原的空间结构造成了微扰。

Many interesting problems arise from the set of points on elliptic curves over a finite field under group operations.

许多有趣的问题产生的一系列点的椭圆曲线下有限域集团业务。

In this article, aiming at a kind of elliptic problem, three types of preserving-symmetry finite volume schemes under quadrangle partition grids are firstly established . During the course of the establishing, the" vertex-centered" control volume are selected and the balance-equation is discretized by utilizing the finite volume element method.

本文首先对自共轭椭圆问题，在四边形剖分下，通过选取"vertex-centered"类型的控制体，并利用有限体积元方法对平衡方程进行离散，首次建立了四边形剖分下的三种保对称的有限体格式。

Two kinds of methods to estimate the first derivative of rotating angle in the cracked section are presented.

针对J〓积分中的裂纹韧带曲率的计算问题，给出了两种简单的计算方法，即等截面梁估算法和椭圆边界变截面梁估算法。

By using function theoretic methods,the existence anduniqueness of the above problem are proved,which is generalization and devel-opment of related results.

先将其转化为一阶非线性椭圆型复方程的混合边值问题，然后使用Newton嵌入法得到了这一混合边值问题的近似解，并且在一定条件下给出了近似解的误差估计。

The model of full vector Galerkin finite element method with transparent boundary conditions is established.

建立了基于透明边界条件的全矢量迦辽金有限元法分析二维光子晶体光纤的模型，并对椭圆芯等5种高双折射光子晶体光纤基模的模式双折射、限制损耗及色散特性进行了数值分析和比较。

This thesis is composed of following parts: the fundamental theory of the modern cryptology is briefly researched, in which the mathematic model of cryptology, data encrypt principle and Galois field theory related with elliptic curve crypto is discussed.

研究了现代密码学相关的基本理论，介绍了密码系统的数学模型、数据加密原理和与椭圆曲线加密密切相关的有限域理论； 2。

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。