对称

This paper developed an efficient finite element method to compute scattering from a body of revolution.

本文给出了一种混合使用有限元和圆柱完全匹配层计算旋转对称目标散射的有限元算法。

In greater than two space dimensions, there is one new consistent statistics in which all representations of the symmetric group can occur. This is infinite statistics, which is also called quantum Boltzmann statistics.

而在大于二维的空间中，还存在一种自洽的统计，其中对称群的所有表示都可以出现，这就是无穷大统计，也就是我们通常所说的量子玻尔兹曼统计。

Second, different to the previous hypothesis based on the theory of principal-agent and information asymmetry, this dissertation explains the issuing motivation of convertible bond from the angle of benefits conflict between the current shareholders and non-current shareholders in China.

与国外已有的从委托代理理论和信息不对称理论对可转债发行动机做出的理论解释不同，论文从非流通股控股股东获取显性净资产增值收益的角度提出了可转债发行动机的新解释，丰富了已有的关于可转债契约融资动机的理论研究。

The advantages of the impact of corporate bonds relative to bank loans on corporate governance are compared and the influence of the corporate bond rating on corporate governance is studied.

规范的债券评级制度，可以降低债权人和债务人之间的信息不对称，能够起到监督和约束经理行为的外部治理作用。

Bent function is a class of the highest nonlinearity Boolean function, and Boolean function is the key in the cipher system.

Bent函数是一类具有最高非线性度的布尔函数，布尔函数是对称加密密码体制设计和分析的关键。

In 1+1 dimensions, there is the argument due to Coleman, that in the case of symmetry breaking you would have a Goldstone boson.

+1方面，存在着由于科尔曼的论点，即在案件对称破缺你将有一个戈德斯通玻色子。

It is very important to study the new Higgs boson given bythe extensions of the SM and the relevant Higgs physics.

寻找Higgs粒子、研究电弱对称破缺的根源以及与此相应的动力学本质，是当前粒子物理的一个中心问题。

We also have investigated applications of the symmetry method in the boundary value problem of the mechanics equations.

其次我们探讨了对称方法在力学方程边值问题中的应用。

Finally,we discuss the existence of symmetric positive solutions for p-Laplacian two point boundary value problem on time scales.

最后，讨论了测度链上p-拉普拉斯动力方程两点边值问题的正对称解的存在性。

In chapter four, the coefficient which is not large for nonsymmetric and indefinite elliptic boundary value problems is considered.

本文主要考虑低阶项的系数不是很大的情况下的非对称不定椭圆边值问题。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。