acoustic reflection

The acoustic reflection technique for the structural and functional assessment of the upper airway

声反射技术在上气道结构与功能研究中的应用

Numerical computations of acoustic reflection coefficients are given for aluminum alloy adhesive joints and metal layer embedded in rock .

本文给出了铝合金粘接件和含矿地层声反射系数的数值计算结果。

Application of Vertical Acoustic Reflection Method in Cutoff Wall Quality Inspection

垂直声波反射法在防渗墙质量检测中的应用

Progress of Lab Study on Remote Exploration Acoustic Reflection Logging Methods

远探测反射波声波测井方法实验研究进展

Research on Acoustic Reflection of a Hall and its Law Voice of Information

厅堂声音反射及其规律研究

Application of Acoustic Reflection Method in Geological Advance Forecast

声波反射法在地质超前预报中的应用

Application of Remote Exploration Acoustic Reflection Imaging Logging Technique in Fractured Reservoir

远探测声波反射波成像测井技术在裂缝性储层评价中的应用

Remote Exploration Acoustic Reflection Well Logging Device and Its Acoustic Sonde Design

远探测声波反射波测井方法研究及声系设计方案

Acoustic reflection correction was caused by radio signal radiation from her cell phone .

声音反射的修正系数正是她手机所发出的电磁波辐射。

Types and Acoustic Reflection Characteristics of Geological Hazards in Yellow Sea and East China Sea

黄东海灾害地质类型及声学反射特征

The acoustic reflection characteristics of the underwater anechoic coating are numerical analyzed .

数值分析了水声吸声覆盖层的声反射特性。

Acoustic reflection correction modified borderline road octane number

声音反射的修正系数修正边界法道路辛烷值

The results indicate that the structure made of the composite to replace steel structure can effectively reduce acoustic reflection coefficient .

结果表明，透声复合材料取代金属制作构件可有效降低其声反射。

Analysis of the Acoustic Reflection from the Underwater Elastic / Piezoelectric Bi-laminated Plate

水下弹性/压电双层板的声波反射分析

The experimental results of this article could be the basis for designing the remote exploration acoustic reflection logging sonde .

实验结果可作为远探测反射波声波测井声系设计的依据。

The asymptotic characteristic of the acoustic reflection coeficient

反射系数的渐近特性

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 acoustic reflection characteristics of the underwater anechoic coating with cavity are researched in different backings and cavity types , and effects of structure are also analyzed .

本文还研究了带空腔的吸声覆盖层在各种背衬和不同腔型下的声反射特性，分析了结构对其的影响。

This paper used vertical acoustic reflection method to detect the quality of Liaofang Reservoir 's dike cutoff wall , and processed original data in instantaneous spectral method .

采用垂直声波反射法对江西廖坊水库堤防墙质量问题进行检测，并利用瞬时谱分析法对原始数据进行处理，所得检测结果经钻探验证效果良好。

Bleeding , pain , mucosal edema in nasal cavity , secretion effusion degree , nasal airway resistance and nasal acoustic reflection were observed and measured ;

观察鼻出血、疼痛度、鼻腔黏膜水肿程度、分泌物渗出，测量鼻通气阻力和鼻声反射，每日观察并清理鼻腔内干痂，记录取干痂的持续时间和疼痛度。

The Study on the Simulation of the Borehole Acoustic Reflection Imaging Logging Tool and It 's Waveform Processing Method ; Dynamical simulation of square-magnet-coupler systems in DWL instrument

声反射成像测井仪器仿真及波形处理技术研究动失水仪方形磁体耦合器的动态仿真

The heart beats , fetal movement , acoustic reflection of oss , stomach and bladder with fluid , umbilical cord and scrotum were observed .

观测了胎心搏动、胎动、胎儿骨骼的声反射、充有液体的胃和膀胱、脐带及阴囊。

The acoustic reflection technique ( AR ), firstly used to detect the lower airway , has been further developed since it was introduced to the upper airway assessment in 1980s .

声反射技术最早应用于下气道的检测，80年代始用于无创性上气道评估。

Study on New Transition Element Substituted Heteropoly Complex Composite Materials and Their Photocatalysis The results indicate that the structure made of the composite to replace steel structure can effectively reduce acoustic reflection coefficient .

新型过渡元素取代的杂多配合物复合材料及其光催化的研究结果表明，透声复合材料取代金属制作构件可有效降低其声反射。

Acoustic wave reflection and transmission on multilayered media

多层固体媒质对声波的反射和透射

The Suppressing Effects of Viscoelastic Coatings on the Acoustic Transmission and Reflection

粘弹性材料覆盖层对于声波透射及反射的衰减作用

Acoustic Transmission and reflection of viscoelastic layer containing microbubbles

声波在含气孔粘弹材料层上的透射与反射

A novel method for applying environment correction to sonic skew log is presented & an acoustic path scattered reflection method .

本文提出了一种声波时差曲线环境效正的方法&漫反射声路法。

The typical size of material sample is about 1000mm × 1000mm . And the acoustic parameters include reflection and transmission coefficients ( echo reduction and insertion loss ) .

材料样品的典型尺寸为1000mm×1000mm左右，目前的测量频率范围为2.5～20kHz，测量参数包括反射系数（回声降低），透射系数（插入损失）等。

The influences of rubber and polymer coatings on the acoustic transmission and reflection are estimated using Thomson-Haskell matrix method , and the suppressing effects of viscoelastic polymer substrate on the acoustic pressure waves are investigated at varied substrate thickness .

本文采用ThomsonHaskell方法计算了在钢板上覆盖橡胶和高分子聚合物对于反射及透射声波所产生的影响，并且研究了在橡胶层下填充不同厚度的粘弹性高分子聚合物对于压力声波的衰减作用。