查询词典 wave propagation

The tanglesome problem,which includes the coupling of detonation of highexplosives,propagation of blast wave and interaction of explosion wave and shellstructures,is resolved by a staged calculation procedure.A numerical simulation tothe elasto-plastic structural response of the double-walled explosion containmentvessels closed with flat head,which has not been reported by other literatures before,was performed.The simulated results are in good agreement with that of theexperiment.The characteristics of the dynamic response of the vessels weresummarized.Some noticeable new phenomena were pointed out.

在数值分析方面，本文对一个包含有装药爆炸、爆炸波传播、爆炸冲击波与结构相互作用的复杂耦合问题，提出了分段解耦的计算方法，并首次完成了带平板封头的双层圆柱形爆炸容器弹塑性结构响应的数值模拟，得出了与实验基本一致的结果，总结了圆柱形爆炸容器弹塑性结构响应的基本特点，并发现了一些值得注意的新现象和新问题。

Wave propagation in a micropolar medium is more complicated than in a linear elastic medium, with two coupled wave equations.

在微极介质中波的传播路径要符合两个耦合波方程，这比在线弹性介质中复杂得多。

After graduation, he continued to work at the same institute, engaged in the research of shock wave propagation in solids, hyper-velocity impact and shock wave consolidation. He obtained PhD in applied mechanics from the University of Cambridge in 1998 with a thesis about constitutive relations and elastic waves for cellular solids modeled as a micropolar solid.

毕业后继续在力学所从事高温高压下固体中冲击波传播、高速冲击及爆炸冲击波压实金属粉末的机理研究。1998年获英国剑桥大学应用力学博士学位，论文研究胞状固体材料本构关系及微极材料中弹性波传播的问题。

For strong disturbance case in which Δp is set to be 5, by examining the distributions of relevant physical quantities along radial direction and the normal of wave front, we can infer that the slow wave introduced by the strong pressure pulse steepens into slow shock during the propagation process.

与二维情形类似，沿由源区出发的径向，可以分辨出压力脉冲增长相所引起的前导快波与后随慢波的传播，同时还可观察到压力脉冲恢复相所导致的快模磁声波的传播，由于传播速度的差异，该波动在向外传播的过程中逐渐超过后随慢波。

First, systematic study on propagation, reflection and interaction of axial stress wave is made to deduce the calculation equation for axial elastic and plastic stress wave, which fit for analysis of impact buckling of axial compression member.

本文首先对轴向应力波在构件中的传播、反射及相互作用进行系统分析，推导出适合轴心受压构件冲击屈曲分析的轴向弹、塑性应力波计算公式。

Two dominate variation trends are distinguished in the data plots of compressional-wave velocity versus Possion ratio, indicating the effects of mud content and calcite cement on the elastic properties of sandstone samples. In each change trend, with the rock texture transfering gradually from grain-supporting to matrix-supporting with increasing mud and calcite cement content, the propagation of elastic wave also changed from grain-to-grain contacts to rock matrix, which resulted in the measured data illustrating extremely different tendency. It helps utilize the physics properties of reservoir sandstone to extract rock texture and diagenesis properties in the research area.

样品在纵波速度－泊松比交汇图中表现出两种主要变化趋势，分别对应泥质与钙质胶结物的影响；在每个变化趋势中随泥质含量与钙质胶结物含量的增加，岩石结构从颗粒所构成的骨架支撑逐渐表现为基质支撑，弹性波能量的传播也从通过颗粒接触边界转变为通过岩石基质传播，这是使砂岩样品测试结果表现出两种截然不同变化趋势的主要原因，为利用岩石物理特性从地震资料中提取岩石结构、沉积与成岩特征的信息提供了依据。

The modified Rytov's method is applied to the study of the light wave oblique propagation, and the fluctuation index of plane wave is obtained.

将修正的Rytov方法推广应用于研究斜程传输问题，推导了平面波斜程传输时的闪烁指数。

Based on the Elliott wave principle, we propose an N-shaped wave technical index, and use the physical strength of slope, potential energy, angle, length, and time to construct back-propagation neural networks, and forecast Taiwan stock market trend.

以艾略特波浪理论为基础，提出一个N型波浪形状的技术指标，利用N型波浪的斜率、位能、夹角、长度、时间的物理力量建构符合泰勒级数精神的倒传递类神经网路对台湾股票市场中期趋势加以探讨。

Based on the wave equation, this paper describes the underwater acoustic propagation by a wave guide model,and computes the model.

文摘：通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。

Based on the wave equation, this paper describes the underwater acoustic propagation by a wave guide model, and computes the model.

通过求解波动方程建立了水声在波导中传播的模型并进行了仿真计算。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。