Seismic acoustic impedance linear inversion algorithm is studied.

研究地震波阻抗线性反演求解方法。

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。

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。

Up till now, there is no accurate standard for the optimum acoustic impedance of the coupling medium.

目前国内超声医学界对最佳耦合剂声阻数值的选择尚无较为准确的说法。

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。

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。

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。

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。

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。

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。

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。

At present, electric resistance, chloride ion concentration anomaly, chloride ion profile and acoustic impedance logging data can b...

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。

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。

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 post-stack wavelet processing (estimate of determining reflectivity) is considered the first step to perform the acoustic impedance inversion.

叠后子波处理（求反射系数的估计）是波阻抗反演的第一步。

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。

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。

Based on the numerical results, the curve-fitting expressions for the acoustic impedance of perforated plates with cross flow and grazing flow are obtained.

综合无流、有流情况下穿孔板声阻抗的近似公式，给出穿孔元件声阻抗新模型。

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。

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。

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。

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。

In this paper, the acoustic impact testing method has been presented with two different excitation methods: the tap testing method and the acoustic impedance testing method.

依据激励方式的不同，本文分别从敲击检测以及声阻检测方法两个方面对声振检测方法进行了介绍。

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 simple method is devised for measuring the detection impedance in the acoustic impedance method of detection of unbonds and is based on an equivalent circuit of the detector.

本文在声阻法检测器等效线路的基础上，提供一种测量检测阻抗的简捷方法。

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。

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。

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。

The acoustic impedances and thicknesses of the acoustic decoupling layers determine the acoustic impedance of the acoustic decoupler, and, hence, the pass bandwidth of the DSBAR device.

声波去耦层的声阻抗和厚度决定该声波去耦器的声阻抗，并因此决定DSBAR器件的通带宽度。

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。