查询词典 impedance

Calculating formula of wave impedance is obtained by main values of the inverse tangent function of phase_shift at two neighboring frequencies and the corresponding integral character of phase_shift is denoted as the convergent criterion of wave impedance inversion.

利用复合反射系数中多个频率点的相移反正切函数主值，给出了波阻抗的计算公式，并把套管-地层环空间介质中波的相移的整、实特性作为波阻抗反演收敛的判据。

Based on conducting P/S wave joint inversion formula and ascertaining the inversion process, we make the P/S wave inversion of some seismic line of Sulige gas field, obtain the P wave impedance, S wave impedance and the V/V and limit distribution range of low speed mudstone, tight sandstone and effective sandstone respectively.

据此，在推导纵横波联合反演公式和确定反演过程的基础上，对苏里格气田某测线进行纵横波联合反演，得到纵波阻抗、横波阻抗和纵横波速度比，从而确定了低速泥岩、致密砂岩与有效砂岩的分布范围。

The irrational impedance function is applied to the synthesis design of the regulating network[1][2], its regulating accuracy depending on the approximate times of the impedance function.

无理阻抗函数用于调节网络综合设计，其调节精度将取决于阻抗函数的近似次数。

The effects of longitudinal elastic wave impedance and joint impedance on transmission and reflection efficiency are analyzed.

因此，开展舰船结构声传递的阻抑机理和应用研究，具有重要的理论意义和实用价值。

The vibration transmission efficiency and reflection efficiency are determined as functions of longitudinal elastic wave impedance and joint impedance.

舰船结构声传递的阻抑机理与应用研究，是一个涉及结构声、结构振动和弹性波控制的交叉领域的研究课题。

Again, this is a somewhat idealized assumption in that it assumes that the operator can determine that all remote phones are on-hook, that those phones truly represent high impedance in the ADSL band, and that if an ADSL modem is present at the remote, there is some means to force it into a high-impedance state.

再次，这是一个有些理想化的假设，假定操作员能确定所有的远程电话是挂机的，那些电话代表ADSL带宽中的阻抗，如果远端有一个ADSL调制解调器的话，有一些办法可以让它强制进入高阻抗状态。

Impedance pneumography FZ-1 is of value in determining the therapeutic effects of drugs and following up, it also to be used in diagnosing disorders due to respiratory impedance changes of increased airway resistance or decreased lung compliance or both.

认为该仪器对于气道阻力增加和肺顺应性降低等呼吸阻抗改变疾病的诊断，以及判断药物疗效和病情随访有较大价值。

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。

This immediately brings us to the next part of this article: creating an output "replace function".

下面进入文章的第二部分：建立一个"缓存处理函数"。

He was elected as an International Ornithological Committee member in 2002 during the 24th IOC held in Beijing.

现为中国鸟类学会理事和WPA 专家组成员。2002年被推选为国际鸟类委员会委员。