弹性波

The faultiness of existing models was discussed. A new model for elastic wave velocity of unconsolidated sandstone was developed on the basis of these models.

首先讨论了现有各类模型存在的不足，并在这些模型的基础上，提出了新的疏松砂岩弹性波速分析模型。

Phase velocity and group velocity are important characteristics of elastic wave propagation.

相速度、群速度是弹性波传播的重要特征。

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。

Elastic wave transmission in a continuous inhomogeneous media is studied.

对弹性波在非均匀介质中传播时的波幅进行了研究。

In addition, simplex algorithm is used to inverse calculation the material parameters and thickness from experimental data and the results are quite good.

本文利用已发展成熟的弹性波理论，针对均质等向性弹性体，以所得的理论正解作为反算过程中的正算解，并利用一种几何搜寻的最佳化方法同时反算材料参数及厚度，反算过程中所使用的材料参数均为未知，仅须给予几组材料的预测值。

Adopting the Biot's wave equation of transversely isotropic saturated soils and taking the influence of the frequencyon on the viscous coupling effect between the solid and liquid media into account, the reflection on the half-space surface of transversely isotropic saturated soil is studied. It challenges traditional view of only considering low frequency couple effect in saturated soils.

采用横观各向同性饱和土体的Biot波动方程，考虑频率对固液两相粘滞耦合作用的影响，深入研究了弹性波在横观各向同性饱和土体半空间的反射，克服了以往饱和土体仅考虑低频耦合作用的做法。

Some crystallized or fractured media show an isotropy relating to elastic wave propagation.

文中建立了一套模拟算法，研究了各向异性与各向同性介质中弹性波场的特征。

The vibration transmission efficiency and reflection efficiency are determined as functions of longitudinal elastic wave impedance and joint impedance.

舰船结构声传递的阻抑机理与应用研究，是一个涉及结构声、结构振动和弹性波控制的交叉领域的研究课题。

Based on the theory of elastic wave in anisotropy medium, the characteristic of the seismic wave is analyzed in this paper.

从各向异性介质的弹性波理论出发，本文系统地分析了各向异性土介质中地震波的传播特性。

A theoretical model is developed to simulate the dynamic load transfer between the actuators and the host medium and the resulting elastic wave propagation.

建立一个理论模型来模拟致动器和母体之间的动态载荷传递以及产生的弹性波传播。

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。