1) acoustic ray theory
声线理论
1.
Based on the acoustic ray theory and the sonar equation,the mathematics models for passive sonar detecting submarine were established.
本文给出了海洋水文要素与声速的关系,在分析了相关海域的水文条件基础上,基于声线理论和声呐方程,建立了被动声呐对潜探测的数学模型。
2) linear thermoacoustic theory
线性热声理论
1.
In this paper, a two-stage pulse tube cooler was optimized based on linear thermoacoustic theory and coupled with a traveling-wave thermoacoustic engine.
本文在实验室现有行波热声发动机的基础上,运用线性热声理论对两级脉管制冷机进行了设计,并用声学放大器对热声发动机和脉管制冷机进行耦合,提高脉管制冷机的驱动压比,从而获得了41 K的低温,这是目前热声驱动脉管制冷机所获得的最低制冷温度。
2.
Due to obvious nonlinear effect,the calculation based on linear thermoacoustic theory cannot forecast the difference between these two kinds of resonance tubes and has a large deviation from the experiment results.
由于存在显著的非线性效应,基于经典线性热声理论的计算无法预测两种谐振管实验性能的不同,并且与实验结果偏差很大。
4) vortex sound theory
涡声理论
1.
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。
5) acoustoelasticity theory
声弹理论
1.
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。
6) thermoacoustic theory
热声理论
1.
The developmental origin of investigation on thermoacoustic theory is reviewed.
回顾了热声理论研究的发展起源。
2.
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。
3.
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。
补充资料：声线
声线
物理学术语。不考虑声的波动性质，所画出的自声源发出的代表声能传播方向的曲线。在各向同性的介质中，声线就代表波的传播方向，它处处与波阵面相垂直。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条