查询词典 wave equation

An integral expression for the time domain output response of traveling wave electrooptic phase modulator is derived by using the scalar wave equation and Fourier transform technique.

从标量波动方程出发，采用傅里叶变换的方法，导出了行波电光相位调制器的时间域输出响应的计算公式。

The propagation matrix method used widely in stratified media is extended to laterally inho-mogeneous media,and a numerical method known as generalized propagation matrix method for simulating elastic seismic wave propagation in inhomogeneous media is presented by using mixed variable elastic wave equation and matrix exponent solution of system of linear ordinary differential equations.

应用混合变量弹性动力学方程和线性常微分方程组的矩阵指数解法，将层状介质中广泛应用的弹性波传播矩阵解法推广至横向非均匀介质，给出了一种可计算复杂地质体中弹性波传播的广义传播矩阵数值解法。

The main body of a book have analysed a generator losing the magnetism physics process , have given a generator out the fundamental equation losing the magnetism queen; By using simulated module of electric system in Matlab/Simulink,build a single infinity system emulation model , have included module such as generator , excitation system , transformer , idle work power source , circuit loads , infinity system , transmission line; Lose magnetism condition two kinds specifically for the excitation winding loses magnetism and the part completely losing magnetism, lower emulation having carried out different working condition, have gained machine holding stater voltage , have encouraged the magnetoelectricity stream , excitation voltage and output having performed meritorious service power wave form change condition; By simulated wave form of contrast , to every electricity amounts, change law has carried out theoretical analysis.

本文分析了发电机失磁的物理过程，给出了发电机失磁后的基本方程；通过使用Matlab/Simulink中的电力系统仿真模块，建立一个单机无穷大系统仿真模型，包括了发电机、励磁系统、变压器、无功电源、线路负载、无穷大系统、输电线路等模块；针对励磁绕组完全失磁和部分失磁两种失磁情况，进行了不同工况下的仿真，获得了机端定子电压、励磁电流、励磁电压和输出有功功率波形的变化情况；通过对比仿真波形，对各电气量变化规律进行了理论分析。

Supposition of two vibrations with same frequency and direction, condition generated mechanical wave, dynamic equation of plane harmonic wave.

同方相同频率的两个简谐振动的合成；机械波产生的条件；平面简谐行波的运动学方程。

Week 4 Supposition of two vibrations with same frequency and direction, condition generated mechanical wave, dynamic equation of plane harmonic wave.

第4周 同方相同频率的两个简谐振动的合成；机械波产生的条件；平面简谐行波的运动学方程。

Absorption and attenuation of seismic wave in viscoelastic medium have been analyzed from the theory through viscoelastic wave equation.

地震波的这种衰减和频散，使得不能直接从地震数据上得到准确的地下信息和分辨率更高的图像。

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。

Based on plane wave decomposition, We propose a wave-equation depth migration method for pre-stack seismic data.

提出了一套基於平面波分解的波动方程叠前地震数据深度偏移方法。

Based on the particularity of receiving and observing system in 3-D VSP surface shot hole and by use of reciprocity theorem of seismic wave field,a method of carrying out wave equation migration is proposed for 3D VSP .

常规的三维VSP地震数据偏移成像大都使用基于射线理论的Kirchhoff积分方法在共炮点道集中进行，因此对地下速度横向变化大的复杂构造区适应性差、效率很低。

Based on up_ and down_going wave decomposition and elastic wave power reciprocity theorem, this paper derives, in the lateral velocity varying case, linear prediction operators expression and the generalized spectral factorization equation for reflection dataset.

本文基于上下行波分解及弹性波互易定理，导出横向变速介质条件下线性预测算子的表达式和反射数据的广义谱分解方程。

We have limited budget let me know if you can do this competitively.

我们有限的预算让我知道如果你能做到这一点竞争力。

We don't know how other critters breathe--lizards, for example.

我们还不知道诸如蜥蜴之类的动物如何呼吸。