查询词典 wave velocity

Know to all, The refract wave exist an precondition, that is the bottom medium velocity is bigger than upper, then medium interface produce the refractive wave, if the medium exist the speed turn in reverse, and low speed in false bottom, the medium interface can not calculate.

众所周知，折射波存在的前提是下层介质的速度一定要大于上层介质的速度，这样才能在界面形成折射波，如果存在低速夹层和速度倒转，则利用折射波来求取表层结构难以进行。

The results show that the responses are decreased with the addition of viscous energy dissipation brace systems, and traveling wave effect is disadvantage to the structure, and pseudo static displacement is decreasing with the increasing of wave velocity. The approximation results by the first-order perturbation modification based on forcing decoupling method are precise.

结果表明，加粘滞耗能支撑后，结构的反应明显减小；行波效应对结构的反应是不利的，且拟静力项的影响随着波速的增加而减小；基于强行解耦的一阶摄动修正法给出的近似解有很好的精度。

Phase and group velocity are the important parameters for researching seismic wave propagation and describing the media property, and they are key contents in theory of elastic wave propagation and play a role in theory and application.

相速度和群速度是研究地震波传播规律和描述介质特性的重要参数，是弹性波传播理论中的核心内容，在理论研究和实际应用中有重要作用。

The dispersivity of wave propagation implies that phase velocity of a single harmonic wave is a function of the angle frequency.

本论文基于上述耦合模型，对单轴应变一维情况讨论了非线性饱和-非饱和多孔介质中波传播过程的失稳现象和逸散性。

The relations of inducing skin current of shielding layer, core voltage and core current with the environment field were obtained. The change of shield layer current wave with grounding state of external shield and core voltage with loading resistance was analyzed. According to the dependence of shield layer current oscillating frequency on electromagnetic wave propagation velocity, conception of transporting line of shield layer-ground with equivalent relative dielectric constant was presented. fited equation of equivalent relative dielectric constant with change of cable height was given.

试验得到九芯电缆屏蔽层感应电流、芯线感应电压、芯线感应电流以及环境场之间的关系；分析了皮电流波形随外皮接地状态的变化，芯电压随负载电阻的变化；基于皮电流振荡频率与电磁波传播速度的关系，提出了屏蔽层-大地"传输线"等效相对介电常数概念，给出了等效相对介电常数随电缆高度变化的拟合式；皮电流计算与测量结果在波形、振荡周期、衰减规律等方面有较好的一致性。

Every known wave spreads with some definite velocity, and so should a wave of light.

每个人都知道波是以某种确定的速度传播的，光波当然也是这样。

Based on the theory of rayleigh wave propagation in layer medium,the variation of wave velocity can reflect the variation of rock and soil mechanical property.

根据瑞雷面波在层状介质中的传播理论，波速的变化可以反映出岩土力学性质的变化。

In isotropic medium the wave velocity of these two types of wave is identical; however, their vibration characteristics are different.

实验测试表明无偏振特性的扭转波在各向异性介质中传播时也会出现两种速度不同的扭转波，速度值与剪切横波的快慢横波速度值一致。

In this paper, micro-rock mining in the breakdown of elastic waves generated by the information source, application of rock mass elastic wave and the related breakdown of the theory and technology, to explore unknown goaf water accumulation and nucleation process, found the exact elastic wave velocity than the VP / VS, the amplitude ratio VSH / VPH, spectral, waveform, and frequency of abnormal microseism.

本文以采动岩体微破裂产生的弹性波为信息源，应用弹性波与岩体破裂的相关理论与技术，探索地下采空区不明水体的蓄积和成核过程，发现存在确切的弹性波波速比VP/VS、振幅比VSH/VPH 、波谱、波形以及微震频度的异常。

The phase lag between the pressure wave and velocity wave has been revealed to be accordant with the field synergy principle.

对场协同理论在脉管制冷机中的具体应用进行了研究，数值模拟了小孔型、双向进气型脉管制冷机的动态过程，揭示了脉管内压力波和速度波之间的协同关系。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。