perturbation是什么意思

用法例句

Measuring the complex permittivity of phantom model by perturbation method;

微扰法测量微波等效体模的复介电常数

Investigation on optical wave transmission through Gaussian rough surface of layered medium using perturbation method;

高斯分层介质粗糙面光波透射问题的微扰法研究

By comparing the theoretical and measured results, we find that the rectangular cavity perturbation method has relative high precision in complex permittivity.

详细介绍了矩形谐振腔微扰法的基本原理;通过对比标准物质的测量结果发现,矩形谐振腔微扰法测量复介电常数具有比较高的测量精度,且使用样品少。

The Foresee of Chaos of Planar Josephson Equation with Melnikov Function and Perturbation Method;

通过Melnikov函数和微扰法来预测平面Josephson方程的混沌

The binding energies of the ground state and the low-lying excited states of hydrogen-like impurity in a InAs/GaAs quantum dot are investigated by applying the effective mass approximation and the perturbation.

在有效质量近似下,采用微扰法研究了InAs/GaAs量子点内类氢杂质基态及低激发态的束缚能。

First taking the energy of hydrogen atom as zero level of energy, the energy levels of 2s-4f states of helium atom are calculated by means of perturbation, and then taking the energy of helium atom as zero level of energy, the energy levels of 2s-4f states of lithium atom are calculated by means of perturbation.

首先以氢原子的能量为零级近似能量,用微扰法计算了氦原子的2s～4f态能量,然后以氦原子的能量为零级近似能量,用微扰法计算了锂原子2s～4f态的能量。

A new classical small perturbation method of electromagnetic scattering from rough surface with consideration of the effect of the curvature of the surface is presented.

本文在分析传统粗糙面电磁散射微扰法的基础上 ,给出了一种新的考虑曲率修正效应的微扰法 ,解决了传统微扰法计算掠入射散射时的误差问题 。

The optical wave scattering from exponential distribution rough surface is studied using the small perturbation method.

运用微扰法研究了指数型粗糙面的光散射问题,给出了不同极化情形下散射系数的数学表达式,数值计算得到了双站和单站两种情形下散射系数随散射角变化的曲线,讨论了粗糙面高度起伏均方根、相关长度,介质介电常数,入射光波长对散射系数的影响,得出了指数型粗糙面光散射系数的特征,结果表明粗糙面高度起伏均方根、相关长度,介质介电常数,入射光波长对指数型粗糙面光散射系数的影响是比较复杂的。

In this paper, the fundamental theory of electromagnetic (optical) wave scattering from the random rough surfaces is introduced, different methods of optical wave scattering from the rough surfaces including the Kirchhoff Approximation Method and the Small Perturbation Method are discussed.

本文首先介绍了随机粗糙面电磁(光)散射的基本理论,讨论了基尔霍夫近似方法和微扰法等粗糙面光散射的基本方法。

The ground state energy to second order perturbation of helium atom was calculated by using the perturbation theory.

用微扰法作了一些简化处理 ,具体计算了氦原子基态能量到二级修正 ,并与实际结果进行了比

Taking medium as a system of nonlinear oscillator,applying the perturbation method of Liouville equation and the perturbation method of stationary state,in this paper,it obtains the change of density matrix induced by crossing of high velocity electron,which provide the basis for calculating the interrelated thermodynamical quantities further.

将介质视为非线性振子系统 ,应用对刘维方程的微扰展开方法和定态微扰方法 ,得到了有快速电子穿过系统导致的密度矩阵的改变 ,为进一步计算相关热力学量提供了基础 。

The traditional analytical and numerical method could not analyze the scattering characteristic of rough surface at low grazing angle(LGA)effectively,a high-order small perturbation method(HSPM)was adopted in this paper.

针对粗糙表面低掠入射散射特性求解的大误差问题,采用高阶微扰法研究了分形布朗运动粗糙表面在低掠入射条件下的散射特性,计算了高阶微扰法在低掠入射时的修正值,比较了高阶场量和阴影函数对低掠入射的修正效应,讨论了不同分维数下低掠入射时的散射系数,分析了低掠入射下极化指数与不同幂次正割函数的拟合逼近问题,修正了Ngo等人的结论。

The four Stokes components of brightness temperature and emissivity are solved using the high-order small perturbation method(HSPM).

该模型基于二维粗糙海面上场的高阶微扰法展开近似,得到了4个发射率分量及亮温的高阶微扰解。

Measuring the Dielectric Constant of Plant Leaves with Microwave Cavity Perturbation Method;

微波谐振腔微扰法测量植物叶片介电常数

Test method for complex permittivity of solid dielectric materials at microwave frequencies--Perturbation method

GB/T7265.1-1987固体电介质微波复介电常数的测试方法微扰法

A PERTURBATION METHOD FOR THE NONLINEAR DRIFT WAVES DRIVEN BY A SINUSOIDAL WAVE

微扰法解由正弦波驱动的非线性漂移波的分岔

Resonance Cavity Perturbation Method for Measuring Dielectric Constant and Application of Matlab;

谐振腔微扰法测量介电常数及Matlab在其中的应用

The Foresee of Chaos of Planar Josephson Equation with Melnikov Function and Perturbation Method;

通过Melnikov函数和微扰法来预测平面Josephson方程的混沌

Measurement of Electro-magnetic Parameters of Materials by Perturbation Method and Application of Network Analyzer

微扰法配合网络分析仪测试材料的电磁参数

Using Coaxial Cavity and Coalesce with Perturbation Techniques to Measure Medium's Complex Permittivity

同轴谐振腔及微扰法测量介质介电常数

Branching Ratio and CP Asymmetry of B→pη～(′) Decays in the Perturbative QCD Approach;

微扰QCD因子化方法与B→pη～（′）衰变研究

Centered difference method for numerical differentiation with noisy data;

带扰动数据的数值微分的中心差分法

Perturbation Approximative Method of Nonlinear Motion Equation of A Simple Pendulum;

单摆非线性运动方程的微扰近似解法

Slight perturbation attack on spatiotemporal chaotic cryptosystem

时空混沌保密通信系统的微扰攻击法

Studies on Nonperturbative Method and Permutation Group Method in Gauge Field Theory;

规范场论中的非微扰方法和置换群方法研究

Study of ESD Immunity Testing Method for Micro-Electronic System

微电子系统的静电放电抗扰度实验方法研究

The Study about the Thermodynamic Properties of Hadronic Matter and the Non-perturbative CJT Method;

强子物质热力学性质和非微扰CJT计算方法研究

Studies on IFN-α-2b Loaded Sustained-release PLGA Microspheres with Nonaqueous Method;

无水法制备干扰素-α-2b PLGA缓释微球的研究

Branching Ratio and CP Asymmetry of B→K～*K(η～(′)) Decays in the Perturbative QCD Approach;

微扰QCD因子化方法与B→K～*K（η～（′））衰变研究

The Direct Perturbation Method and Approximate Solutions of Nonlinear Schr(?)dinger Equation Hierarchy;

直接微扰方法和非线性薛定谔方程族的近似解

Additive drag perturbation method for measuring active drag in swimming;

测量游泳动态阻力的附加阻力微扰动法