查询词典 method of perturbation

For polydisperse systems at large Péclet number, we establish the systems of differential equations describing the leading term and the second term of the pairdistribution function via regular perturbation method.

针对高Péclet数情形，通过正则扰动法我们建立了决定对分布函数的微扰展开的主导项和一阶项的联立方程组，并用由此算出的对分布函数的数值解计算了系统的沉降系数。

S: In the non-homogeneous semi-infinite medium, the shear modulus varies in the form of exponential function along the depth, by the perturbation method , the wave function solution and phase velocity equation of the Rayleigh surface waves are obtained in the paper.

对剪切弹性模量沿深度以指数函数变化的非均质半空间，本文用摄动法得到了Rayleigh面波的波函数解答及相速度方程。

Based on the nonlinear dispersion relation of electromagnetic wave in relativistic plasma, the nonlinear controlling equation for linearly polarized mode is obtained using Karpman's method. The modulation instability of intense laser pulse propagating through relativistic plasma is analyzed and the modulation instability growth rate as a function of perturbation wave number for laser beam propagating through relativistic plasma is given.

从相对论等离体中电磁波的非线性色散方程出发，利用Karpman方法获得了线性偏振波模所满足的非线性控制方程，在非线性色散方程和非线性控制方程的基础上对线性偏振激光在相对论等离体中传播的调制不稳定性进行分析，给出了调制不稳定的时间增长率与扰动态波数之间的函数关系。

For single wall carbon nanotubes, we study the nonmagnetic and magnetic impurity effects on zigzag nanotubes by Green's function perturbation method and found that the impurity effects are different for semiconducting and metallic nanotubes. Arbitrary potential can induce a bound state in semiconducting nanotubes, and resonance state in metallic tubes.

在我们的工作以前，共振态对系统磁性的贡献往往被忽略，实验上观测到的掺非磁性杂质的高温超导的磁化率呈居里—外斯形式完全归结为杂质诱导出的局域磁矩，尽管可以解释磁化率，但与一些实验产生矛盾。

The matrix perturbation method is effective to solve this kind of problem.

矩阵摄动法是解决这种问题的有力工具。

We must seek two main approximation methods of solution , the variation method and perturbation theory

我们必须寻求两个主要的近似解法、变分法和微扰法。

The examples show that the random perturbation method is both easy to be carried out and extremely efficient.

算例表明，本文所提出的随机摄动算法易于实施，且十分有效。

The singular perturbation method is a useful tool to work with the mathematical and physical problems.

它的主要思想是将非线性的，高阶的或变系数的数学物理问题的解用所含某个小变量的渐进近似式来表示。

This is combined with a Numerical Perturbation Method that quantifies the configuration and connection-weight status of the network.

这种网络与数字干扰方法相结合，从而量化了机器人的结构与重量的关系。

The parameter can be worked out by used the Finite element method and energy perturbation.

利用有限元法和能量摄动法对电机的电感参数进行计算分析。

You have to walk your own alk in this life.

次生中你必须走自己的路。

To start with, the thesis analyses ***ism in terms of the generic masculine words, word order and semantic derogation of women in greater detail.

论文首先从阳性词泛指，词序，词义的贬降等方面对英语中的性别歧视现象进行了详细的分析。