查询词典 acoustic

Based on the acoustic radiation modes, the simulation of the reconstruction of acoustic pressure fields is studied. And a satisfactory result is obtained.

基于声辐射模态，对辐射声场的重构进行仿真研究，取得了令人满意的结果。

Some interesting phenomena are observed which related to acoustic streaming and acoustic radiation pressure.

这些现象与声流及声辐射压力有关。

In experiments, pressure ratio and acoustic power have been enhanced by increasing heating power and the length of acoustic pressure amplifier.

在实验研究中，通过增加声压放大器长度和加热功率，提高压比和声功。

In this thesis, the theory, algorithm and applications combined with the project "research on the feature extraction and analysis of XX acoustic vector" are discussed, according to the present development, main problems and practical needs in application of feature extraction of pressure and acoustic vector signals.

本文根据声压和声矢量信号特征提取的研究现状、存在的主要问题以及工程实际应用的基本要求，结合基金项目"XX声矢量特征提取与分析研究"的内容，对目标特征提取及其分类识别进行了理论、算法与应用方面的探讨。

Key words: coupled structure-acoustic systems; acoustic pressure; optimization; finite element method

以一矩形板结构一立方体声场耦合系统为实例，得到了优化的结构厚度分布。

According to a point of layer acoustic velocity value by displacement pressure sesmic interval velocity and acoustic velocity,it changes with depth obviously.

利用地震层速度和声波速度转换的排替压力只是相对于地层某点的排替压力值，它随深度变化较为明显。

The design of the torpedo acoustic homing system simulation platform based on HLAwas proposed for the torpedo acoustic homing system and its battle environment.

针对鱼雷声自导系统及其作战环境，提出了基于高层体系结构的鱼雷声自导系统仿真平台设计方案。

The presented concept of "beam-distance acoustic image" and "beam-depth acoustic image" provide torpedo near field control and guide characteristics.

提出目标近场波束-深度和波束-距离二维声图象的概念，为鱼雷末制导阶段提供了目标近场回声二维特征。

According to the technical parameters of acoustic homing torpedo, the torpedo acoustic homing range of actual targets under real water conditions is forecasted with the grid search technique.

根据声自导鱼雷的技术参数，采用网格搜索法预报真实水文条件下鱼雷声自导对实际目标的作用距离，旨在为鱼雷攻击提供建议。

This method is based on the Snell law of acoustic propagation in water. Different velocity gradients among linear layers in water are utilized to draw the sound ray chart, and a mathematical model of the geometric operational range is built. Furthermore, the geometric homing range is predicted with sound ray density, a prediction system of geometric operational range for acoustic homing torpedo is designed and the function of the system is realized through a system software. The sea trial demonstrates the prediction validity of the system.

该方法基于声波在水中传播的Snell定律，利用水中各线性分层间不同的声速梯度，绘制声线图，建立了几何自导作用距离的数学模型，并通过声线密度对几何作用距离进行预报，设计了声自导鱼雷几何作用距离预报系统，并通过系统软件实现了其功能，经测试，该系统在海上试验中取得了良好效果。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。