查询词典 elastic wave

We extend the second order elastic tensor of Husdon's and turn it to a matrix which makes the calculation of second order perturbation much more concise. Then the azimuthally phase and group velocity formulas of plane wave propagation in horizontal plane are deduced according to Christoffel equation, and the azimuthally dependent velocities in dry and water saturated cracked medium are calculated.

而后，根据Christoffel方程推导了由各向同性背景介质中含两组非正交的垂直裂隙而形成的等效单斜各向异性介质中，在水平面内随方位变化的相速度和群速度的计算公式，并对干裂隙和饱和流体填充裂隙介质两种具体情况进行了计算。

Derma in experimental group became thinner,elastic fibers of papillar layer became hypertrophic,vessel density under skin was significantly greater than that of normal group,and collagen fibers of derma were bulky and lined like wave.

2实验组真皮变薄，乳头层弹力纤维大量增生，皮下血管网密度明显大于对照组，真皮网状层、真皮内胶原纤维粗大呈波浪状排列。

In conventional seismic data processing, the earth is regarded as prefectly elastic medium.However,the pores of stratum rock often contain fluid. So, when the seismic wave propagates in it, there are energy attenuation and phase distortion related to frequency. Moreover, the attenuation, scattering,and dispersion of high-frequency components are far higher than that of low-frequency components.

常规地震资料处理中把大地看成是完全弹性介质，实际上，地层岩石孔隙中常常含有流体，当地震波在其中传播时要发生与频率相关的能量衰减和相位畸变，且高频成分的衰减、散射和弥散远高于低频成分。

In present work the propagation of solitary wave in a pressurized fluid-filled elastic tube is studied.

研究了内充预压流体的弹性管中孤立波的传播。

In this paper, the scatting of SH-wave by a semi-cylindrical hill above a subsurface elastic cylindrical inclusion in half-space is studied based on "conjunction".

本文采用&契合&的思想，研究了地下圆柱形弹性夹塞与地面上的半圆形凸起地形对SH波散射问题。

Based on finite difference method coupled with the famous elastic-plastic cap model of rock, numerical simulation and analyses for the propagation and evolution mechanism of 1 D detonated wave are done.

岩石爆轰波的传播、演化过程是极其复杂的，其影响因素较多，如地形、地质条件以及物理力学参数、爆破的种类和方法、爆源的大小和形状等。

An analytic method is developed for the problem of scattering of steady SH-wave and dynamic analysis of a shallow-embedded circular lining structure in the field of linearly elastic dynamic mechanics in this paper.

本文在线弹性力学范畴内，建立了求解半无限空间中界面附近圆形衬砌结构对SH波散射与动应力集中问题的解析方法。

An analytic method is developed for the problem of scattering of steady SH-wave and dynamic analysis of a shallow-embedded circular lining structure in the field of linearly elastic dynamic mechanics in this paper.

中文摘要：本文在线弹性力学范畴内，建立了求解半无限空间中界面附近圆形衬砌结构对SH波散射与动应力集中问题的解析方法。

Based on the wave theory oflongitudinal impact of a rigid mass on a elastic rod, this paper suggests asimple but believable method of calcu1ation of impact stress of buffer spring.

本文在综合分析刚性质量对弹性杆件的纵向撞击的波动理论的基础上，对缓冲簧的撞击应力提出了一个简便而信得过的计算方法。

The ANSYS/LS-DYNA software was used to simulate the stress wave pattern and the pulse width in the process, as the hammers had different masses and the radius of impact head and its elastic modulus had different impact velocities, and the prestressed bolt was excited by hammers with different masses and different hardnesses in laboratory.

然后运用ANSYS/LS-DYNA软件模拟了不同质量、撞击头半径和弹性模量的撞击杆以不同的速度撞击长杆的应力波形态和脉冲宽度，并在实验室对预应力锚杆用不同质量、不同硬度的力锤进行了激振试验。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。