查询词典 elastic wave

The thesis discusses three eigenvalues individually and explains the pressure wave propagation of three modes, includes wave speed, wave decay and energy distribution. Since the elastic potential energy occupies more than 98% of mechanical energy in the arteries, which is larger than 2% of kinetic energy of flowing blood. Else join elastic wall and wall of managing having a viscid condition to analysis .

本文将个别讨论此三组特徵值，来说明三组压力波的传递模态，其中包括波速，以及波的衰减；由於在动脉的能量分布中，由管壁振动的弹性位能占了98%，远超过血液本身流动的2%，再加上管的弹性模数和管壁的黏滞性再来讨论此三组模态，个别在弹性管的能量分布。

First of all, it is a elastic wave therefore it can transmit in the most types of materials and it can be used to investigate both their surfaces and their interiors, whereas light can just get through the lucid materials and Hertzian waves is unable to transmit in the conductive materials.

本实验简单介绍超声波的产生方法、传播规律和测试原理，通过对固体弹性常数的测量了解超声波在测试方面应用的特点，通过对试块尺寸的测量和人工反射体定位了解超声波在检验和探测方面的应用。

Elastic wave migration is one of the key technologies of multicomponent exploration.

摘要： 弹性波成像是多分量地震勘探需要解决的关键技术之一。

In addition, from the space structures of specimen distributionregions to the distribution patterns of every kind of specimens in an individualdistribution region, the obvious self-comparability exists in the distribution pattern oftest values of elastic wave velocities and medium densities.

另外，岩土样品弹性波速与介质密度的分布从样品分布域的空间结构到分布域内各类子样品的分布规律具有明显的自相似性。

Anisotropic Media ; Pseudospectral Method ; Elastic Wave Propagation ; Multi-Componet Records ; Stability Condition

各向异性介质；伪谱法；弹性波传播；多分量记录；稳定性条件

In this paper, the elastic wave propagation in a two-dimensional piezoelectric phononic crystal is studied by considering the mechanic–electric coupling.

本文考虑力电耦合效应，研究了弹性波在二维压电声子晶体中的传播特性。

It is deduced in this paper theoretically the elastic wave equation in two dimen-sional EDA media, for which numerical modeling is carried out.

中文摘要：本文从理论上推导了二维EDA介质中的弹性波动方程，并对其进行了数值模拟，获得了当坐标系旋转30°时用点源激发的三分量波场切片及用相互正交的横波震源在同一位置激发，用两个相互正交的水平检波器接收的四分量全成记录。

An algorithm for decomposition of multi wave and multi component data into upgoing and downgoing P wave and S wave was derived in frequency wave number domain in this paper. The reflection coefficient versus incident angle was calculated, which can provide foundational data for the AVO inversion of elastic parameters and prediction of fluid factor.

在频率波数域中采用解析法，解出多层条件下海底实测的多分量地震数据分解成上行和下行P波和S波的算法，导出海底各层地震反射系数随入射角变化的递推计算公式，为海底多波多分量AVO弹性参数的反演及流体因子预测提供基础数据。

By using dynamics analysis software RecurDyn to establish a model for the prototype of a belt conveyor, this essay reaches through simulation research the conclusion that during the initial startup phase, it is necessary to maintain a lag between the speed of the tail pulley and that of the head pulley, mainly because it takes a certain amount of time for the elastic wave to travel through the belt to reach the tail of the conveyor.

应用动力学分析软件RecurDyn建立了带式输送机的样机模型，通过仿真研究，得出在起动初始阶段，尾部滚筒速度要滞后于头部滚筒速度一定时间，这主要是由于弹性波在输送带中进行传播到达尾部需要一定的时间；并且在起动阶段，输送带的张力比稳定运行时变化大，起动时间越长，输送带出现的最大张力越小。

According to Snell law and Zoeppritz equation,the paper studies the rule of energy's distribution of elastic wave on the interface,obtain the rule of received energy variation with offset or angle,and also study the relation of the exploding freq...

根据Snell定理和Zoeppritz方程，通过水平层模型的正演模拟，研究了地震波在地层分界面上的能量与方位角关系，发现了地震反射波的能量在超临界角突然增强的变化规律。

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。