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- Acoustic impedance method 声阻法
- 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。
- The authors use the specific acoustic impedance of MPP which needs to be measured beforehand in the approach, and then, the transfer matrix method is employed to predict the sound-absorbing performance of single or multi-layered MPP. 采用该方法获得的微孔板吸声性能曲线与实测结果相当接近，能较好地预测各种组合微孔板的吸声性能。
- acoustical impedance method 声阻法
- 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。
- The AC complex impedance method is widely used to charactrize electronic materials. ac复阻抗方法已广泛地用于表征电子材料。
- Study on the Adsorption of DE and DIE on Zinc Electrode by means of A.C. Impedance Method. 交流阻抗法研究DE、DIE在锌电极上的吸附
- 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 was concluded that AC impedance method was the most desirable one for evaluation of ODA treatment. 启动锅炉经十八烷胺保护后阻抗值增大了3个数量级。
- 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。
- 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;
- Human body composition is measured by bioelectrical impedance method, which is a noninvasive detecting method, simply, quick, safe and economical. 生物电阻抗测量体成分的方法具有操作简便、无损伤、快捷、安全和价廉的特点,越来越受到广泛重视。
- 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。
- A new single-terminal fault locating method based on the traveling wave of wavelet modulus maxima combining with impedance method is presented. 提出了一种基于小波变换模极大值的行波法与阻抗法相结合的单端故障测距方法。
- 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。
- Utter, A.C., Nieman D.C., Ward, A.N., &Butterworth, D.E. (1999).Use of the leg-to-leg bioelectrical impedance method in assessing body-composition change in obese women. 何燕娟（民88）：有氧舞蹈及水中有氧学习课程对专科高年级女生健康适能及身体组成之比较。
