利用面波衰减的Q模型，反演出近地表的Q值。
Surface wave Q model with attenuation is used to inverse near surface Q value.
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.
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.
为双线偏振雷达定量测量降雨工作及讨论雨区对雷达波衰减打下了基础。
This work has laid the foundation of quantitative measurement of rain rate and the discussion of extinction properties of radar wave in rain clouds.
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.
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.
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.
在地震长波长情况下，相同特征尺度的圆形干裂纹比薄的干裂纹对弹性波衰减更有效。
Under the circumstance of seismic long wavelength, the circular dry fracture is more effective in attenuation of elastic wave than thin dry fracture when the characteristic scale is same.
该方法把由声波测井数据得到的斯通·利波衰减分为介质内衰减和孔隙流体渗流衰减两部分。
In this method, Stoneley wave attenuation from AC log is divided into two parts: attenuation through porous media and percolation attenuation through pore-fluid.
本文给出了表面多次波衰减方法的研究现状的系统阐述，并分析了表面多次波衰减研究的发展趋势。
The research progress in SRM attenuation is presented in this paper, and also the SRM future research direction.
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.
下行压缩波与上行波衰减规律不同，其中上行拉力波比下行波衰减快；上行压缩波比下行波衰减慢。
Wave amplitude decay in different ways by downward compressive wave and upward wave, the upward wave decay slower than the downward wave.
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. Wave decline method is used in the experimental research.
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.
通过对冲击波、爆轰波衰减渐近规律的分析，推导出柱面、球面强爆轰波的衰减有限距离的函数表达式。
The finite attenuation distance of the cylindrical and spherical detonation was deduced through analyzing the asymptotic attenuation.
给出了等离子体电子密度线性分布和指数分布时，雷达电磁波的频率、电子碰撞频率、等离子体密度对电磁波衰减的影响。
For different plasma-density profiles, the effects of the frequency of EM wave, collisional frequency and plasma density on the attenuation of electromagnetic wave were discussed.
热辐射密度以核爆点距离平方倒数的速度衰减，爆炸、冲击波、致电离辐射效应的衰减速度则更快。
The intensity of thermal radiation decreases only as the inverse square of the distance from a nuclear detonation, while blast, shock, and prompt ionizing radiation effects decrease more rapidly.
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.
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.
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.
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.
结果表明，层中波场由一系列柱面波组成，其衰减特性与围岩中的规律不同。
The results indicated that the field in the stratum is composed of a series of cylinder wave which has the attenuation different from the country rock.
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.
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.
膨胀石墨蠕虫对毫米波的衰减为散射和吸收作用的综合结果。
The millimeter wave attenuation of expanded graphite is a comprehensive actions of scattering and absorption.
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.
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.
采用垂直入射具有金属衬底的均匀等离子体模型，对不同入射频率的电磁波的衰减以及总出入射功率比进行了数值模拟。
In a model with vertical incidence of plane electromagnetic wave into plasma slabs with metal underlay, the attenuation of electromagnetic wave and reflected power are deduced.
采用垂直入射具有金属衬底的均匀等离子体模型，对不同入射频率的电磁波的衰减以及总出入射功率比进行了数值模拟。
In a model with vertical incidence of plane electromagnetic wave into plasma slabs with metal underlay, the attenuation of electromagnetic wave and reflected power are deduced.
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