For studying the sound radiation of turbulence,the author introduced Lighthill acoustic analogy and the relative theories,such as Curle equation,Powell vortex sound theory etc.
从湍流声辐射的相关理论出发,介绍Lighthill声学比拟理论以及该理论的研究进展,如含固体边界的Curle方程、Powell的涡声理论等。
A new method for measuring in-situ stresses with ultrasound is developed based on acoustoelasticity theory.
首先描述岩石的声弹理论,给出岩石的应力与弹性波波速之间的理论关系;其次利用岩石应力与弹性波波速之间的理论关系提出地应力超声测量方法,即通过测量套孔应力解除前后的孔壁超声波波速的变化,利用声弹理论反演出地应力。
The developmental origin of investigation on thermoacoustic theory is reviewed.
回顾了热声理论研究的发展起源。
The thermodynamic aspects are analyzed based on thermoacoustic theory.
为了解释低温下制冷功率与膨胀功的非比例关系而从热声理论出发 ,对G -M制冷机进行了热力分析 ,阐明了膨胀功和制冷功率的关系及与极限制冷温度相关的因素。
The thermoacoustic theory is introduced in brief and it points out that the isobaric thermal expansion coefficient β 0 is the essential factor for thermal sound conversion.
简述了热声理论，指出热声转换对工质的本质要求取决于等压热膨胀系数β０。
Introduce a structure echo signal by the subsidiary beam.
本文从声场理论及工件的结构特点进行分析,解释了一种超声探伤付声束引起的结构回波信号。
Active Acoustics Control of Threedimensional Enclosed Sound Field
三维闭声场主动声学控制理论与应用
Theory of Ultrasound Micro/nano Particle Manipulation and Research of Acoustic Field Design
超声操控微纳米颗粒的理论及声场设计研究
Theoretical analysis for modulating acoustic boundary conditions of a regenerator by double acoustic drivers
双声源法调制回热器边界声场的理论分析
Noise prediction of submerged free jet based on theory of acoustic analogy
基于声模拟理论的水下自由射流场噪声预报
The Inherent Mechanism of Reputation Management --Also on the Peculiarity of Reputation Management in the E-market;
论声誉管理的内在机理——兼论网络市场声誉管理的特殊性
Research on Source Localization by Matched Field Processing Based on Ray Theory;
基于射线理论的匹配场声源定位研究
Discussion about the completion of Morse's normal-mode solution for sound field in a room
论莫尔斯的室内声场简正波理论解的完备性
Study of Real-time Monitoring on Furnace Temperature Field Based on Acoustic Theory;
基于声波理论的炉膛温度场在线监测技术研究
Theoretical Study and Design of a Combined Auralization and Visualization System for En-closed Sound Fields;
封闭声场视听一体化系统理论研究与系统设计
An Empirical Study of Noise Theory on China s Security Market;
噪声交易理论在中国证券市场的实证研究
ANALYSIS OF NOISE TRADING IN STOCK MAEKET THROUGH MAKING USE OF "KAWK & DOVE GAME" THEORY;
证券市场中噪声交易的“鹰鸽博弈”理论分析
Theoretical performance of near-field conventional beamforming by using linear array sonar
线列阵声纳近场常规波束形成的理论性能(英文)
Numerical Calculation and Analysis on Two-Dimensional Spectrum for Acoustic Wave Propagation in a Borehole
井孔声场二维谱的数值计算与理论分析
Theoretical and Numerical Study of Borehole Acoustic Field Excited by External Acoustic Sources in the Biot Solid;
Biot介质中井外声源激发井孔声场的理论研究与数值模拟
Theoretical and Numerical Study of Borehole Acoustic and Electric Field Excited by External Acoustic Sources under Seismoelectric Effects
震电效应下井外声源激发井孔声电场的理论研究与数值模拟
The principle of the car acceleration noise is discussed and the acoustic field model for underneath car cavity is derived.
论述了轿车加速行驶噪声的原理,推导了轿车与地面间声场的声学模型。
Theoretical and Experimental Study on the Distributed Source Boundary Point Method Based Nearfield Acoustic Holography;
基于分布源边界点法的近场声全息理论与实验研究