查询词典 impedance

A simple formula for the characteristic impedance of a type of noncoplanar fin antennas to be used simply is obtained by stripline theory.

首次提出并严格分析了超宽带鳍状天线，得到了其特性阻抗和电磁场分布的严格公式，详细分析了其辐射特性，理论分析表明它具有超宽带的特性，这是本章的重点。

Constant value of vena contracta coefficient has been employed in the well-used quasi-steady models for computing the nonlinear acoustic impedance of the orifice. However, this nonrealistic assumption degrades the accuracy of the theoretical models.

常用的小孔声学非线性效应的准定常模型采用不随声强变化的vena收缩系数，这种不合实际的假设影响了非线性声阻的计算精度。

In this thesis, the problems of impedance matching are studied based on the theory of nonreciprocal transmission lines, the broadband matching methods of nonreciprocal transmission lines are put forward.

本文在非互易传输线理论的基础上，对非互易传输线的阻抗匹配问题进行了研究，提出了非互易传输线宽带匹配的方法。

First, the related concepts about theory of nonreciprocal transmission lines are introduced, including the nonreciprocal transmission line equations, the characteristic parameters and some important parameters, which can lay a theoretical foundation for impedance matching.

首先介绍了非互易传输线理论的相关概念，包括非互易传输线方程，特性参数、重要参量等，为阻抗匹配问题的研究打下理论基础。

Through the comparison, we use traveling-wave method to measure dispersion and nonresonant perturbation method to measure interaction impedance.

测量系统采用虚拟仪器的设计思想，由测量平台、伺服电机、矢量网络分析仪、计算机等硬件组成，用LabView完成了系统软件设计。

The dispersion and interaction impedance of two kinds of helical slowwave structure with vane-loaded are measured by using nonresonant perturbation method in 4～18 GHz with Aglient 8510C vector network analyzer.

螺旋线行波管由于其具有高功率、高增益、高效率和宽频带的特点，在电子对抗和通讯等领域具有广泛的应用。

Development of a 100 kV low impedance and nonuniformly lumped parameter Blumlein PFN.

kV低阻抗非均匀集中参数Blumlein脉冲形成网络的研制。

The NOVO seems to be less affected by impedance, and handles them all well.

NOVO的表现不太受阻抗的影响，高低阻都能应付好。

Purpose To study the significance of measuring the respiratory impedance in bronchial asthma patients by impulse oscillometry method.

目的探讨脉冲振荡技术法测定支气管哮喘患者呼吸阻抗的价值。

Objective: To measure the variation and significance of respiratory impedance and pulmonary ventilation function in patients with bronchial asthma by impulse oscillometry before or after the bronchial provocation test, investigate the relationship between the IOS method and bronchial provocation test, and evaluate the clinical significance in bronchial asthma by IOS method.

目的：应用脉冲振荡法测定支气管哮喘患者在支气管激发试验前后的呼吸阻抗及肺通气功能参数的变化规律和临床意义，探讨IOS测定方法能否作为支气管激发试验的判断方法以及IOS测定参数在哮喘诊断中的价值。

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。