With kernel medium model, sound propagation characteristic in grain is studied.
从颗粒介质模型出发，对粮食中声传播性质进行了研究。
Sea surface and bottom constituted sound propagation environment of the neritic acoustic duct field.
海面与海底构成了声源浅海海域波导场的声传播环境。
The proper sound propagation model is the basis of transfer function prediction of underwater acoustical channel.
合适的水声传播模型是水下声信道传递函数预报的基础。
A computational aeroacoustics approach is applied to studying sound propagation in subsonic and supersonic nozzle.
采用计算气动声学方法研究了管道近音速区的声传播和声波与激波的相互作用问题。
Sonar is a technique that USES sound propagation (usually underwater) to navigate, communicate or to detect other vessels.
声纳一种利用水下声音传播来导航，联络或侦查其他船只的技术。
Use finite element and infinite element technology, and unified method to simulate flow noise, vibration noise and sound propagation.
采用有限元和无限元技术，用统一的方法模拟流动噪声、振动噪声及声传播问题。
The understanding of the theory of fluids including sound propagation through them made little progress from the Greeks to the Renaissance.
从希腊到文艺复兴时期，对流体理论的理解，包括声音是如何通过流体传播的，并没有多大的进展。
The paper discusses noise reduction in technical structures by means of systematically manipulating structure borne sound propagation.
本文研究了借助于系统地调控结构声传播性态以达到降低工程结构噪声目标的方法。
Computational criteria used to judge the correctness of numerical calculation for sound propagation in ducts, are presented in the paper.
本文对管道声传播数值计算提出了一组判据，用来衡量数值计算的可靠性；
Ray model is one of the conventional sound propagation models, which can be used to model the sound propagation in the irregular ocean environment.
射线模型是比较常见的传播模型之一，可以用于不规则海域声传播建模。
They probably realized that sound was a wave propagating through the air and may have had a notion of the compressibility of air during sound propagation.
他们可能意识到声音是通过空气传播的波，并可能有声音传播时空气压缩的概念。
At the same time, a hybrid numerical and analytical method is used to calculate and analyse the visco-thermal effect on the sound propagation in wider ducts.
同时，利用理论和数值相结合的方法计算和分析了热粘性效应对较粗管道中声传播的影响。
This paper analyses the connection between high altitude weather information and sound propagation in the atmosphere, and evaluates the weather information by audibility.
文中分析了高空气象条件与声传播的关系，并通过能听度评估气象条件。
Because of the coupling between surface channel and SOFAR channel, sound propagation in two, axis underwater channel is complex and calculation of acoustic fields is difficult.
由于表面声道与深海声道间的耦合效应，声波在双轴海洋声道中的传播比较复杂，因此求解双轴海洋声道中的声场就比较困难。
The study focuses on environmental sounds recognition after the monitoring center receiving audio data from the sea. First a brief introduction is given to sound propagation and detection process.
课题研究内容主要是对于已经接收到监控中心的海上音频数据进行识别，首先介绍了声音传播和检测过程及其对后续处理的影响；
A fuller understanding of the propagation of sound waves had to wait until more elaborate mathematical techniques were developed.
对声波传播的进一步了解必须要等到更精密的数学技术开发出来。
Like light waves, acoustic (sound) waves are characterized by a frequency, wavelength and propagation speed.
声波就和光波一样，是以频率、波长和传播速度为其特征。
This system can realize directional propagation of sound in the air, and it is an emerging technology with extensive applications.
该系统能够使声音在空气中实现定向传播，是一种有着广泛应用前景的新兴技术。
Detonation is propagation of a combustion-driven shock wave at or above the speed of sound.
爆轰是一种以冲击波为特征，以超音速传播的爆炸。
For example, acoustical tile on a ceiling serves to reduce the propagation of sound.
比如，顶棚上安装吸音板就有助于减少声音的传播。
A novel audio beam loudspeaker which based on nonlinear propagation effects of ultrasonic in the air to generate audible sound with high directivity is presented.
提出了一种利用空气中超声波非线性传播效应制作的、可产生高指向性可听声的新型声束扬声器。
The dispersion is due to the inhomogeneity of medium, which will lead the energy of sound to deviate from its direction of propagation.
另一部分则是由于声波在不均匀介质中的声散射把能量散射到其他方向，而使原来传播方向上的声波能量减弱。
The disturbance is sound wave, conforming to the laws of acoustic propagation in solids.
这种扰动是种声波，它遵从在固体中声波的传播规律。
The disturbance is sound wave, conforming tothelaws of acoustic propagation in solids.
这种扰动是种声波，它遵从在固体中声波的传播规律。
In this paper, the sound signal characteristic of moving wheel vehicle, track vehicle and mankind is obtained by analysing the propagation characteristics of the ground.
本文通过对大地传输特性的分析，得出了轮式车辆、履带式车辆和人运动时地声信号的特征。
What is the physical mechanism of the propagation of sound waves?
声波传播的物理机理是什么？
The propagation of sound in wet close granular media can excite two expand waves and a rotation wave.
声波在其中传播时将出现两个膨胀波和一个旋转波。
They understood the mechanisms of generation, propagation, and perception of sound (Dimarogonas, 1990).
他们理解产生，传播以及感知声音的机械原理(Dimarogonas, 1990)。
This paper deals with the non-linear propagation of sound waves radiated by a thin spherical shell vibrating in ideal fluid.
本文研究理想流体中薄质球壳受激振动辐射声波的非线性传播。
A novel audio beam loudspeaker is fabricated by utilizing the nonlinear propagation effects of ultrasonic in the air to generate audible high directivity sound.
一种新颖的声束扬声器是捏造的利用超声波在空气中的非线性传播效应，产生声音的高指向性的声音。
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