2) 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。
3) 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。
4) 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。
5) Noise Vibration Theory
声-振理论
6) vocal music theory
声乐理论
1.
In vocal music teaching at teachers college, it is necessary to reform the traditional teaching method and offer students vocal music theory course with systematic vocal music theory so as to direct students performance practice effectively.
在高师声乐教学中,改革传统的教学模式,增设声乐理论大课,对学生进行系统的声乐理论教学,以清晰的理论指导学生的演唱实践,将有利于学生理论水平和演唱技巧的不断提高,把高师声乐教学提高到一个新水平。
补充资料：混响声场
见声场。
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