Negative coefficients occur where there is a decrease in acoustic impedance across the reflecting interface.
当反射界面上下两侧的声波组抗降低时，反射系数就会出现负值。
An interface between layers of contrasting acoustic, optical or electromagnetic properties.
具有不同的声学、光学或电磁学特征的层之间的界面。
For scattering of a bounded acoustic beam from a liquid-solid interface, the principal difficulty comes from the treatment of tie plane wave reflection coefficient.
分析有限声波束从平面液-固界面上散射的困难主要发生在平面波反射系数的处理上。
Reflection and refraction of acoustic waves at a sediment interface is an important problem for seafloor scattering, bottom reverberation and the acoustic detection of objects.
声波在海底界面的反射和透射是海底散射、海底混响、海底目标探测的重要问题。
Explicit expressions for the acoustic reflection coefficients from the interfaces are given and ultrasonic experiments for measuring the interface stiffness constants are described.
文章还给出了两相同固体中界面声反射系数的表达式，介绍了测量界面劲度常数的超声反射谱方法。
The underwater acoustic signal can cause surface wave motion at the water-air interface and hence modulate the magnitude of the laser beam falling on the water surface.
水下声信号在水-空气界面会引起表面波动而对打在水表面的激光进行调制。
The reflection coefficient of an interface depends on the contrast in acoustic impedance of the rock on either side of the interface.
界面的反射系数取决于界面两侧岩石的声阻抗差。
The hardware and software design principle for real-time data acquisition and processing of an acoustic positioning system using IBM/ PC and relavent interface technique are described in this paper.
本文主要介绍用IBM/PC及接口技术，实现声学综合定位系统实时数据采集及处理的软硬件的设计思想。
In geophysics, reflection refers to the seismic energy or signal that returns from an interface of contrasting acoustic impedance, known as a reflector, according to Snell's law.
在地球物理中，反射指的是地震能量或信号在反射面（具有不同声阻抗的地层分界面）处按照斯奈尔定律发生的回转。
Cement Bond Log virtually measures acoustic parameters related to cement-casing interface to determine the quality of cementation.
声波水泥胶结测井实质上就是通过测量石油套管井的水泥胶结面的有关声学参数来判断水泥胶结质量。
Cement Bond Log virtually measures acoustic parameters related to cement-casing interface to determine the quality of cementation.
声波水泥胶结测井实质上就是通过测量石油套管井的水泥胶结面的有关声学参数来判断水泥胶结质量。
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