The basic acoustic theory and principle used in reconstruction of cross-section velocity field are also presented.
详细介绍了声波法重建断面速度场的理论知识和基本原理。
Thermoacoustic theory has been studied particularly by exploring the time structure of acoustic signals and the law of acoustic pulse amplitude variation.
通过对水声信号的时间结构和声脉冲幅度变化规律的测定，着重研究了热声理论。
According to acoustic structure theory base, acoustic principle of multi-holes acoustextile and nonwovens characteristics, nonwovens acoustic theory are analysed in the paper.
根据吸声结构理论基础以及多孔吸声材料的吸声机理，结合非织造布的结构特点，系统分析了非织造布的吸声原理。
On the basis of acoustic theory, combined with lab experiments and theoretical derivation, the dissertation presents a thorough study of the mechanism of ultrasound's effect on viscosity reduction.
该论文以声波原理为指导，结合室内实验和理论推导，深入探讨了超声波降粘的作用机理和作用效果。
Through to acoustic emission technology understanding, in the light of the mining engineering key stratum theory, applies it in overhead mining.
通过对声发射技术的理解，结合采矿工程中关键层理论，将其应用到蹬空开采中。
The ADCP(Acoustic Doppler Current Profiler) technique is used to far-measure the stereo velocity of ocean current according to Doppler theory.
声学多普勒流速剖面仪——ADCP技术是根据多普勒原理遥测海流的垂直分布。
The ray approach is adopted to study the acoustic field in theory, and the ultrasonic experiment has been carried out in laboratory to model the underwater waveguide.
理论上采用射线近似方法分析了时间反转声场特性，实验上在实验室内开展了水下波导的超声模拟实验。
The paper introduce the theory of surface acoustic wave sensor, the digital signal treatment, the method of soft design in the passive and wireless tire pressure monitoring system in detail.
文章详细介绍了无源无线轮胎压力监测系统中的声表面波传感器工作原理、回波信号组成、数字信号处理和软件开发方法；
It offers a theory instruction of real passive acoustic location.
为实际声目标被动定位提供理论指导。
The theory, function, feature, and key technology points of data communicator using underwater acoustic transmission are introduced in this paper.
本文介绍了水下声传输数据通讯的原理、功能作用及关键技术研究。
Acoustic model and speech recognition theory is the basis for building speech recognition systems.
语音的声学模型和识别理论是构建语音识别系统的基础。
In this paper, the acoustic signals of FBC is studied with chaotic theory.
本文应用混沌理论对燃煤流化床燃烧产生的声波信号进行了研究。
The principle which is based on acoustic channel theory is reported here.
本文介绍了这一基于声信道理论的原理。
The relationship between acoustic emission (AE) parameters and damage variable is obtained by applying the damage theory and microelement statistical strength theory.
由损伤力学理论与微元强度统计理论，得到了岩石声发射参数与损伤参量的关系。
Based on wave propagation theory, the paper describes briefly basic principle of several acoustic propagation models, and discusses detailedly foundation of coupled normal mode.
在波动传播理论的基础上，简要介绍了几种主要声传播模型的基本原理，并着重对简正波模型进行了研究。
Theory of acoustic surface wave is the base for studying high performance acoustic surface is device.
声表面波理论是研究高性能声表面波器件的理论基础。
Based on the wavelet transformation and the theory of modal acoustic emission, the dispersion of guided wave propagated in thin plate was investigated by acoustic emission experiment.
基于小波变换和模态声发射理论，通过模态声发射试验的方法确定了管道中导波传播的频散特性。
The paper points out the problems in analyzing the working theory of acoustic correlation log, and thus gives correct ways of analysis, which can clearly explain the working theory of the device.
提出目前声相关计程仪原理分析过程中存在的问题，及其正确的分析方法，从而使其工作原理的分析过程清晰明了。
This paper presents the theory of passive localization for underwater sources based on Acoustic Ray channel modelling.
本文论述以声线理论信道模型为基础的水声被动定位原理。
The theory of acoustic radiation modes is a effective method to analyze the behavior of sound field caused by the vibrating body.
声辐射模态理论是有效的分析结构振动辐射声场性质的一种方法。
Using the Normal Model Theory and Wavenumber Integration Method, a low frequency acoustic wave propagation model in shallow sea of multi-layered media is constituted.
应用简正波理论并结合波数积分法，建立了浅海低频声传播特性的仿真数学模型。
In this paper, the acoustic impedance caused by the sound radiation at the terminals of the aperture, which is laid on the cylindrical surface, is analysed on the base of rigorous sound theory.
本文根据严格的声学理论，分析了圆柱面上小孔端面由于辐射所产生的声阻抗率。
Then this article also introduces the acoustic the basic knowledge and theory on cavitation, and sums up the previous measurement methods of acoustic cavitation intensity.
接着本文还介绍了关于声空化的基本知识和理论，总结了前人的研究声空化强度的测量的方法。
The measurement and estimation of suspended sediment using ADCP is based on the theory that the strength of acoustic return signal is directly proportional to silt concentration in water.
ADCP估测悬沙含量是基于声波的背散射强度正比于悬沙浓度的理论。
Here the measurement errors due to acoustic focusing of typical sound sources are analyzed by detailed examples based on the method of image sources in the Ray Theory.
基于射线声学的虚源法，通过具体算例，分析了典型声源声聚焦引起的测量误差。
The theory of acoustic plate mode (APM) sensor used in liquid phase in details is discussed. The design and the application of APM sensor in biology, chemistry and physics are presented.
讨论了可用于液相环境下测量的声板波(APM)传感器的工作原理，并介绍了该传感器在物理、化学和生物检测中的应用。
Based on the theory of elastodynamics, the interaction of elastic surface acoustic waves with surface-breaking defect is studied numerically by using the finite element method.
基于弹性动力学理论，采用有限元方法数值模拟了声表面波沿金属表面传播及其与表面缺陷相互作用的过程。
In this paper, the relationship between the structure vibration and the surface noise radiation is analyzed and deduced from the acoustic and vibrational theory.
本文从声学振动理论出发，分析并导出了结构的振动与表面辐射噪声的关系。
In this paper, the relationship between the structure vibration and the surface noise radiation is analyzed and deduced from the acoustic and vibrational theory.
本文从声学振动理论出发，分析并导出了结构的振动与表面辐射噪声的关系。
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