它满足麦克斯韦方程标量形式和基尔霍夫边界条件，包括传播波和衰减波。
It satisfies the Maxwell's scalar equations and Kirchhoff's boundary conditions and includes propagating waves and evanescent waves.
由于热波是一种高衰减波，且波长短，现已成功地实现了对材料亚表面结构的分层成像。
Laminated imaging of the subsurface structures of materials has been successfully realized by this technique because thermal waves are heavily damped and have short wavelengths.
然而，利用这种性质来衰减观测的面波并非十分容易。
However, it is not trivially easy to use this property for the attenuation of the detected surface-waves.
研究结果显示，在频率域内，面波衰减系数分布与群速度分布具有一定的相关性。
The correlation property between the distribution of attenuation factor and that of the group velocity is indicated, in this study.
研究了埋地管道泄漏信号波的传播方程，泄漏信号频率特性以及衰减方程。
The buried pipe transfer equation, the frequency character and the attenuation equation of the leak signal are studied.
有含湿砂层存在的被动蒸发冷却层屋面的温度波衰减，在本质上不同于干燥状态情况。
The attenuation of temperature wave in humid sand layer on an evaporation cooling roof differs from that in dry sand layer in essence.
在实验室内用频谱振幅比较法模拟测试了储集层岩石在高温高压下的弹性波振幅衰减值。
Attenuation of wave amplitude of reservoir rock at simulated high temperature and pressure is measured with spectrum-amplitude comparison mediod in laboratory.
发现在层裂特性研究中，应力波衰减有重要意义。
It is found that the attenuation of stress wave is important for study of spallation property.
分析了动力试桩中，因土阻力和桩身材料阻尼引起的应力波衰减作用对桩身的完整性检测精度的影响。
It also analyses the influence of attenuation of stress wave cased by the soil resistance and the damp of pile shaft material in dynamic pile test on the precision of pile shaft integrity test.
本文采用自动数据采集及FFT技术研究应力波的弥散与衰减特性。
Dispersion and attenuation characteristics of stress waves were studied by means of the automatic data collection and FFT technique.
由观测事实出发本文讨论了地震尾波衰减率在大地震前后发生变化的可能原因。
On the basis of the observational data, this paper also discusses the probable reasons causing the variation of the coda wave attenuation rate both before and after strong events.
本文主要研究高维空间中带有退化粘性的标量守恒律方程的光滑解的整体存在性，以及该解逼近强平面稀疏波的衰减率。
This paper is concerned with the decay rates of the solution to the strong planar rarefaction waves for scalar conservation laws with degenerate viscosity in several space dimensions.
三体船模型横摇试验包括静水中的自由横摇衰减试验、规则波中的零速横摇试验。
Free decay experiments were conducted in calm water at various model speeds and roll experiments in transverse regular waves at zero speed.
应用有限单元法研究固体火箭发动机不稳定燃烧中的喷管阻尼，并用波衰减对比法进行了试验研究。
Finite element method is used in the study of nozzle damping of instable combustion in a solid rocket motor.
采用X纤维为吸波涂料的吸收剂，制作不同厚度的吸波涂层，测试相应的雷达波反射衰减值。
Microwave Absorbing coatings with different thickness were prepared by fiber X as the Absorbing agent, and the reflecting attenuations of the radar wave were researched.
要分析电网的暂态特性，还必须考虑衰减直流分量和衰减正弦波，以及电压缺口和频率偏移等问题。
Such problems as the attenuation of DC elements and Sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system.
下行波的衰减规律符合指数衰减，但上升波的衰减并不符合这一规律。
Downward wave amplitude decay in negative exponential function, but the upward wave amplitude is not the case.
实验旨在研究气相爆轰波在阻尼管道（管壁上衬有吸收材料）中传播时的衰减现象。
The present experimental investigation attempts to understand the attenuation of detonation waves propagating through an absorbing material lining section.
多次波衰减是海洋地震数据处理中的一个关键问题。
Multiples attenuation is one of the most important problems in Marine seismic data processing.
频敌和衰减是面波传播中的两个基本特征，利用面波频散和衰减可以有效地研究地球内部速度结构和粘弹性结构。
Two of the most predominant characteristics of Surface Wave are Dispersion and Attenuation which are the effective tools to study the velocity structure and viscidity structure of the earth interior.
并且尘埃等离子体层对电磁波的衰减随尘埃粒子浓度以及尘埃粒子半径的增大而明显增强。
The attenuation of the electromagnetic wave from the layers of the dust plasma increases with the increase of density and size of the dust grain.
沙尘粒子的吸收和散射效应能引起毫米波信号的衰减。
The absorption and scattering of sand and dust particles can cause the attenuation in mm-wave band.
相同水雾密度时，水雾的雾滴直径越小，冲击波的衰减率越大。
For the same mist density, the decay ratio of the shock wave increases with the decrease in the water mist diameter.
研究平面电磁波在等离子体中的非线性吸收衰减。
Nonlinear absorption and attenuation of electromagnetic plane wave in plasma are investigated.
研究发现，等离子体的自由电子密度越高，电磁波的能量衰减越快。
The results illustrate that the wave attenuation is stronger at higher plasma density.
弹性波振幅在岩石中的衰减程度受其温压、所含流体性质、流体饱和度、岩石组分、结构等因素的影响。
Attenuation of elastic wave amplitude in rock is affected by its temperature and pressure, filled fluid properties, fluid saturation, rock composition and structure, etc.
通过对岩土介质的介电特性分析，分析雷达波在不同岩层中的传播与衰减规律。
The transmission and attenuation rule of the radar pulse wave in different dielectric are analyzed by analyzing the electrical properties of the geotechnical dielectric.
与其他数值软件一样，用三维离散元程序(3dec)模拟应力波在节理岩体中的传播和衰减时，模型参数对模拟结果有很重要的影响。
Model parameters have the important effects on three-dimensional distinct element code (3dec) modeling of the stress wave propagation and attenuation in jointed rock masses as well as other codes.
利用能量法证明了具耗散边界条件和时间依赖系数的非线性波方程的能量指数衰减性。
By using the perturbed-energy method, the exponential decay of the solution is obtained for the nonlinear wave equations with time-dependent coefficients and dissipative boundary condition.
利用能量法证明了具耗散边界条件和时间依赖系数的非线性波方程的能量指数衰减性。
By using the perturbed-energy method, the exponential decay of the solution is obtained for the nonlinear wave equations with time-dependent coefficients and dissipative boundary condition.
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