查询词典 impedance

Respiratory impedance ; Chronic obstrucive pulmonary diseases ; Impedance pneumography.

呼吸阻抗；慢性阻塞性肺病；肺顺应性

On the basis of polynomial substrate impedance model, multipole GMRES algorithm is adopted to solve impedance matrix equation.

我们以边界元方法计算的结果为数据点，通过分段曲线拟合得到了简单而准确的多项式阻抗模型。

Under the circumstance of simple fault on double circuit transmission lines, the positive-sequence impedance is equal to the negative-sequence impedance, and the positive fault component current is equal to or greater than the negative circuit.

文中通过对线路发生简单故障与跨线故障情况下的正、负序故障分量阻抗关系和正、负序故障分量电流幅值关系的分析，提出了一种判别电力系统发生跨线故障的判别元件。

Considering of the resistive component in the output impedance and line impedance, the reason of the active and reactive power sharing improperly is analyzed. The decouple droop control scheme is presented.

该文在考虑逆变器输出阻抗和线路阻抗中阻性分量的基础上，分析了因逆变器模块滤波电感和线路阻抗差异造成的无功分配不均的原因，提出了功率下垂解耦控制方法。

This circuit is more simple, convenient connectivity, the choice of its parameters with the speaker impedance has a direct relationship, and the speaker impedance is a function of frequency, with larger deviation from the nominal value, so the error is also large, is not conducive to adjust.

此电路较为简单，连接方便，它参数的选择与扬声器阻抗有直接的关系，而扬声器的阻抗又是频率的函数，与标称值偏离较大，因此误差也大，不利于调整。

We can therefore refer to this statistical estimate taken from the evolutive impedance distribution as a 'stationary impedance' estimate.

因此，我们可以参考这个统计估计，采取从演化阻抗分布作为一个'静止阻抗估计。

In this condition, the parallel transformer can exhibit nearly zero impedance to harmonic current and very high primary self-impedance to fundamental current and thus lead harmonic current in power systems to flow into the transformer branch. With a step-down transformer, the power semiconductor switches of the active power filter are always worked in relatively low voltage, which ensure the security and reliability of the active filtering device.

实时检测并联变压器一次侧的谐波电流，根据谐波补偿条件，得到谐波补偿电流的指令信号，通过电力电子变流器跟踪产生谐波补偿电流注入到二次侧补偿绕组中，使得并联变压器对谐波电流呈现近似为零的低阻抗，对基波电流呈现很大的一次侧自阻抗，从而输导系统中的谐波电流流入并联变压器支路。

Triple integral expression of the radiation impedance of square piston is deduced and the numerical results of the radiation impedance are calculated with the method of Gaussian numerical integral.

利用高斯数值积分方法，推导了方形活塞辐射阻抗的三重积分表达式，计算了方形活塞声源的辐射阻抗。

Compared to traditional method,this approach replaced tuning capac-itor with PIN diodes,made use of its characteristics of variable impedance to adjust the impedance through the bias voltage to achieve the autotuning of directivity.

与传统方法相比，该方法采用PIN型二极管代替调节电容，利用其阻抗可变特性，通过偏置电压来调节匹配阻抗，最终实现定向耦合器的自动方向性调节。

It has been proved, that the attenuation value of bridge circuit is not equal to the sum of two terminal attenuation, and it concerned with impedance of wave trap, substation bus impedance, and phase-angle of...

分析和计算表明，桥路衰减的数值不能简单地看作两个终端衰减之和，而与阻波器阻抗、线路阻抗、变电站母线阻抗和邻相同频寄生信号的相位角等参数有关。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了