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- acoustic impedance model 波阻抗模型
- 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。
- 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。
- 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。
- AIM To build a brain bioelectrical impedance model and implement Simulating studies of forward problem of electrical impedance tomography in the brain. 目的建立大脑的生物电阻抗模型,仿真研究生物电阻抗脑断层成像正向问题。
- 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。
- 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。
- Moreover, impedance model parameters are adjusted fuzzily to reduce the force errors in the constrained motion and improve the global force control performance. 通过对阻抗模型参数进行模糊调节减少受限运动中的力误差，提高了全局的力控制效果。
- 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;
- 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。
- The input impedance model is used to substitute the microstrip antenna in harmonic simulation of nonlinear circuit, from which can get the spectrum of AIA and the voltage across the impedance model. 在电路中用输入阻抗模型代替微带天线进行非线性电路的谐波平衡分析，从而得到有源集成天线的频谱特性和阻抗模型的端口电压；
- 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。
- Based on the inversion principle of well logging data, the initial shear wave impedance model was established using shear wave reflection coefficient and converted wave interpreted horizon. 基于测井约束反演原理，利用横波反射系数和转换波解释层位建立初始横波波阻抗模型，优选反演处理参数，实现转换波叠后横波波阻抗反演。
- 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。
