They are characterized by ruggedness, light weight, high sensitivity, low acoustic impedance, easy conformability to complex surface, low cost and large bandwidth.
它具有耐磨、量轻、灵敏度高、声学阻抗低、容易固定在复杂的表面、价格便宜，频带宽等特点。
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。
Acoustic impedance changes and hearing threshold shifts after exposure to impulse noise or air-blasts were studied in guinea pigs.
本文利用豚鼠研究了脉冲噪声和空气冲击波暴露后中耳声阻抗的变化和听阈偏移。
This thesis introduces the measuring principle, device composition and main functions of an intelligent acoustic impedance middle ear analyzer.
介绍了一种智能化声阻抗中耳功能分析仪的测试原理，仪器组成， 系统的主要功能等。
At present, electric resistance, chloride ion concentration anomaly, chloride ion profile and acoustic impedance logging data can be used to predict the gas hydrate saturation.
目前电阻率和氯离子浓度异常、氯离子剖面以及声阻抗测井数据均可预测水合物饱和度。
A special nomograph designed for calculating the normal specific acoustic impedance is proposed.
本文提出一种为计算法向声阻抗率而设计的专用列线图。
According to the energy characteristics of acoustic wave, the bolt bonding integrity can be classified by the means of impedance analysis.
利用声波的能量特征和波阻抗分析方法，对锚固质量进行初步分级；
In this paper, the nonlinear acoustic impedance of the micro-perforated panel is investigated both theoretically and experimentally.
本文对微穿孔板的非线性声阻抗率作理论与实验两方面的研究。
As a parameter directly reflecting the petrophysical property of reservoir, the acoustic impedance can be used for predicting reservoir space distribution and storage conditions.
声波阻抗参数直接反映油气储层物性，能用于预测储层空间和储集条件分布。
To create the traveling-wave phasing and high acoustic impedance, a simplified model of the system is constructed from the view of acoustic network.
为了产生行波声场和形成高声阻抗，从热声网络的观点建立了系统的简化模型。
The algorithm can quantitatively reverse the acoustic impedance value and layered place of layered media to reconstruct the acoustic impedance profile of the layered media.
它能定量地反演出各层状介质的声阻抗值及分层位置，以重建层状介质的声阻抗剖面图。
In consideration of the drawbacks in conventional acoustic impedance inversion method, the homotopy method with vast convergence was applied to the acoustic impedance inversion in seismic exploration.
文章针对传统的声波阻抗反演方法的不足，将大范围收敛的同伦方法用于地震勘探声波阻抗的反演。
For sandstone reservoir, the acoustic impedance of gas-bearing sandstone is lower than that of oil - and water-bearing sandstone, gas in reservoir may be directly recognized by using this difference.
对于砂岩储层，含气砂岩的声阻抗比含油和含水砂岩的声阻抗低，利用这种差异可以直接识别储层中气体。
Based on synthesizing advantages of the pulse echo and spectral ration techniques, a new method, the equivalent acoustic impedance technique is proposed.
在综合了回声法和频谱振幅比法优点的基础上，提出等效声阻抗法。
The proposed finite difference boundary condition expands the scope of application of FDTD to scattering problems of objects with a finite acoustic impedance but without tangential stress.
导出了水中透声目标表面边界条件的时域有限差分(FDTD)表达形式，将FDTD在水声学中的应用范围扩大到无切应力的有限声阻抗目标的散射问题。
For the eyeball composed of membrane and liquid, the contrast of ultrasound imaging is not high due to its small variance in acoustic impedance.
对于由膜组织和液体构成的眼球来说，由于其超声阻抗差别不大造成眼超声成像的对比度不高。
The structure provides a lumped acoustic impedance having an acoustic resistance proportional to frequency, and an acoustic inertance that is inversely proportional to frequency.
该结构提供了一个集总声阻抗具有声波电阻与频率成正比，和声学惰性是与频率成反比。
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。
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。
This paper presents the results obtained in the model experiments on the remote measuring of the acoustic impedance profile of a sea-bottom consisting of horizontal layers.
本文介绍一种声遥测海底平面层系声阻抗分布的模拟实验结果。
The two-microphone method is investigated for the objective of in situ measuring the impedance of an acoustic liner in a duct.
对现场测量管道声衬声阻抗的双传声器法进行了研究。
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。
The acoustic field is calculated through the integral equality of acoustic pressure and velocity at the axial impedance discontinuous planes.
声场通过轴向阻抗间断面的声压和声质点速度积分相等计算。
Seismic wavelet extraction and stratum acoustic impedance inversion are very important in seismic inversion.
地震子波的提取和地层波阻抗反演是地震反演中非常重要的两个方面。
As an objective diagnostic method, aural acoustic impedance measuring device holds a very important position in diagnosing ear diseases and hearing obstacles.
作为一种客观的诊断方法，耳声阻抗测量仪在临床耳疾和听力障碍诊断方面具有重要地位。
Methods to check on objective acoustic impedance and subjective pure tone audiometry.
方法对外伤性聋进行客观声导抗测试和主观纯音测试。
In acoustics, the product of velocity times density, also called acoustic impedance and symbolized by z.
声学中，速度与密度的乘积就是阻抗，也称为声阻抗或波阻抗，用符号Z表示。
Based on 1-d wave equation, a reconstruction algorithm of layered acoustic impedance profile has been established in this paper.
本文基于一维波动方程，提出了一种层状介质声阻抗剖面的重建算法。
The relationship between the radiation impedance and the acoustic radiated power of the radiator with non-uniform vibrating velocity on the surface is formulated.
推导了表面振速分布不均匀的辐射器的辐射阻抗与辐射器辐射声功率之间的关系。
Combined with the result of one dimensional synthetic acoustic curve and seismic geological interpretation, comprehensive constrained inversion forms primitive impedance model along with layers.
反演依靠一维合成声波测井的结果，以地震地质解释的成果为约束，顺层横向递推形成初始波阻抗模型。
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