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- seismic acoustic impedance inversion 地震波阻抗反演
- The Pre-Conditional Conjugate Gradient Algorithm for Inversion of Seismic Acoustic Impedance 地震波阻抗反演的预条件共轭梯度法
- seismic acoustic impedance 地震波阻抗
- It is difficult for conventional reflection seismic surveys to get the information of low velocity layers underlain high acoustic impedance layers, such as evaporites and basalts. 在蒸发岩、玄武岩等高阻抗岩层发育地区，常规反射地震往往难以获取高阻抗层以下的地层地质信息。
- 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。
- 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。
- And the fluid micro-annulus does not affect the shape of spectra, but its existence is equivalent to lowering the acoustic impedance of the cement. 水泥胶结类型不同，反射谱的特征亦不同；微环的存在相当于水泥环声阻抗变小，基本不影响反射谱的形态。
- Opposition to the flow of sound through a surface,acoustic resistance is the real component of acoustic impedance and acoustic reactance is the imaginary component. 声音在通过一个表面时受到的阻力，声阻是声阻抗的实部，声抗是声阻抗的虚部。
- Seismic measurements of travel time and amplitudes define the subsurface, geometry and give estimates of the acoustic impedances related to rock velocities and densities. 根据对地震波的运动时间和振幅所进行的测定，就可以确定地下地层的几何形状，并得出与岩石中波速及密度有关的一个重要参数-声阻抗。
- Obviously, this combined application of AVO attribute analysis and poststack acoustic impedance inversion can effectively identified gas reservoirs in the study area. 综合应用AVO属性分析及叠后波阻抗反演技术可以有效识别研究区气层;
- This paper describes the basic principle,composition and Outburst hazard criterion of the Russia-made 3y A-6 seismic acoustic monitoring system and its trlal application in No. 8 Mlne of Pingdinghan Coal Mining Administration. 介绍了俄罗斯3yA－6型地震声学监测系统的基本原理、系统组成、突出危险判据和在平顶山八矿的试验应用情况。
- It was found that confineme n t expands significantly the duration of shock waves,and the peak pressure of sho ck waves enhances with its acoustic impedance. 实验发现，约束层对激光冲击波的脉宽有显著的展宽作用，且冲击波的峰压值随约束层材料的声阻抗的增大而增大。
- The influence of one-dimension compressible bias flow on the acoustic impedance of perforated panels was discussed with consideration of the compressibility of flow. 摘要从理论上研究了一维可压缩偏流对穿孔声阻抗率的影响，并分析了偏流对穿孔粘滞效应的影响；
- Piezoelectric and dielectric properties and acoustic impedance of the composites with different strontium ferrite and barium ferrate contents were measured and investigated. 分析讨论锶铁氧体和钡铁氧体掺杂质量分数对压电复合材料压电性能、介电性能及声阻抗的影响。
- There are some parameters that influence the multilayer microperfrated structure,which make acoustic impedance and absorption cofficient to compute complicatedly. 影响双层微穿孔结构的参数很多,其声阻抗及吸声系数的计算复杂。
- On the basis of this, the well restrained inverse acoustic impedance and instantaneous frequency are jointly used to predict the overpressure of Yangxia sag, Kuche depression. 在此基础上，利用井约束反演的波阻抗与瞬时频率联合对库车坳陷阳霞凹陷内的超压带进行了预测。
- There are some parameters that influence the multilayer microperfrated structure, which make acoustic impedance and absorption cofficient to compute complicatedly. 摘要影响双层微穿孔结构的参数很多，其声阻抗及吸声系数的计算复杂。
- 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。
- According to the acoustic impedance curve of stapedius, we proposed a mathematical model of the ipsilateral acoustic reflex using the methods of cybernetics. 针对镫骨肌声反射的声阻抗变化曲线,采用控制论的方法,对同侧声反射进行了数学建模。
- Cross-well Seismic Constrained Acoustic Impedance Inversion 井间资料约束下地震波阻抗反演方法研究
