查询词典 impedance

Background: Selective increase of inspiratory impedance augments blood pressure in healthy subjects through activation of the respiratory pump.

背景：在健康个体可通过呼吸模式的改变增加吸气阻力，从而提高血压。

Twenty sinewaves of different frequencies may be conceptually complex to us, and the output of a symphony orchestra even more so, but to an amplifier both composite signals resolve to a single instantaneous voltage that must be increased in amplitude and presented at low impedance.

二十种不同频率的正弦波可能对我们来说概念上有点复杂，交响乐团的输出会更多，但是对于一个功放来说，混合信号会分解到瞬间电压（瞬间电压必须在振幅中增加，并且在低抗阻中显示。

In this thesis, the design scheme of a DSP-controlled inverter applied in mobile generator is presented at the beginning and then the design method of control system is mainly discussed. Equivalent output impedance model of instantaneous voltage and current closed-loop controlled inverter is established on the foundation mentioned above. How the values of LC filter, parameters of PI regulator and feedback coefficient etc. affect the external characteristic of inverter is analyzed in detail. Non-linear factor of inverter are also discussed and corresponding solutions are put forward.

本文首先给出了移动发电机DSP控制逆变模块的设计方案，着重讨论了控制系统的设计方法，在此基础上建立了电压电流瞬时值双闭环控制的逆变模块等效输出阻抗模型，对滤波器LC值、PI调节器参数和反馈系数等各项因素对逆变模块输出外特性的影响进行了详细分析，并探讨了逆变模块中非线性因素对输出波形的影响，提出了相应的解决方案。

Based on some correlative the theory analysis and conclusion of experiment about impedance muffler, some issues about the foundation of model of leak pipeline are tried instructively and analysis reasonably by the acoustical analysis and the characteristic of acoustical spread in the leak pipeline is studied. The leak detection is a little more wonderful technology which can find the leak and then locate it accurately in virtue of correlation leak detection.

本文综合了有关文献的理论分析和试验结果，从声学的角度对供水管道漏损的声学模型的建立进行了有益的尝试和合理的分析，并对漏损管道内的流体声传播特性进行了研究。

Thin body ; acoustic impedance ; integral equation ; boundary element method

薄壳体；声阻抗；积分方程；边界元方法

Using the surface integral equation analysis of complicated target scattering, impedance matrix Z is a dense matrix.

利用表面积分方程分析复杂目标电磁散射特性时，得到的阻抗矩阵Z是一个稠密矩阵。

Keywords: electromagnetic integral equations;higher order vector basis functions;maximally orthogonalization;sparse impedance matrix

通过文中的处理，使得存储阻抗矩阵的内存需求量和求解矩阵方程的迭代求解时间大为降低。

The effects of Hb and SDS on the interphase electric properties of the system were studied by the method of AC impedance.

结果表明，在具有不同结构的两相中，血红蛋白的构象变化不同。

And the research of the effect of MB on the interphase electric properties studied by the method of AC impedance provides further evidence for it.

实验结果表明，加替沙星和亚甲蓝所带电荷相反，因此它们的加入使得SDS在两相间的转移有所不同，对体系电性质的影响也有所不同。

In this work, the performance of six-needle steel electrodes and four-needle graphite electrodes in detecting bio-impedance was compared. Also, coefficients of variability were applied to assess the stability of the system. Experiment showed that the coefficient of variation of the system was less than 6% if the frequency was above 1 kHz. Intra class correlation procedures were applied to assess the reliability of the system due to temperature variability. Values of Ri, Re, C in the system model were reliable with intra class correlations of more than 65%.

探讨了检测电极设计方案，比较分析了六钢针电极和四针石墨电极的性能，同时通过试验证明了系统的稳定性，1 kHz以上系统的变异系数CV＜6%；以组内相关系数ICC来评定在不同温度下系统的可靠性，系统模型中Ri、Re、C的ICC均大于65%，系统稳定可靠。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。