阻尼常数

通过进行理论计算和拟合，得到GaN中的等离子体激元的频率及阻尼常数，并由此计算得到GaN中的载流子浓度和迁移率。

The two branches in each spectrum were independently lineshape-fitted based on scattering analysis , and plasmon frequency and damping constant were obtained , thus the free carrier concentration and mobility could be deduced .

测定平直气轨的粘滞性阻尼常数

Determining the Viscous Damping Constant of the Level Air Cushion Track

数值算例指出，束缚空气的存在将使P波速度降低而使其相应的阻尼常数增大，但对S波却无影响。

The numerical calculation shows that the restrained gas will reduce the velocity of P waves and increase the damping constants corresponding to P waves , but not affect on S wave .

关于气垫导轨阻尼常数的讨论

A discussion on the damping constant of air cushion slideway

利用地震观测系统中的阶跃标定响应记录，在频域基于阶跃信号的幅频特性确定地震计的阻尼常数和自振周期。

ON EARTHQUAKE RECURRENCE INTERVAL STUDY OF THE SELF-VIBRATION FEATURES OF INDUSTRIAL BUILDINGS The damping and frequency of seismometer is obtained by using the step calibration function .

介绍了利用速度的损失测定气轨阻尼常数的方法，分析了实验误差的主要来源。

A method that determines the viscous damping constant of air cushion track with measuring the speed losing is introduced and the main sources of experimental errors are analysed .

为了便于计算，结构设计阶段通常取阻尼比为常数。

For easy figures , the structure design stage usually takes the constant damping ratio .

放大倍数不改变系统的分界频率，但阻尼大小、时间常数和纯延时等非线性环节是影响分界频率的主要因素。

The magnification change has no influence on boundary frequency while the nonlinearity of damping , time constant and pure time delay are its main influencing factors .

给出在转子的交轴上增设一短路绕组和增大交轴阻尼绕组的时间常数等几种解决低频振荡的措施。

Several measures are given to eliminate the oscillations such as installing a shortcircuited quadrature-axis winding on the rotor and increasing the quadrature-axis damper winding time constant .

本文基于准定常假定推论出风与结构的耦合作用实质上就是气动阻尼效应，因此只要在阻尼常数中引入气动阻尼，就可建立考虑风与结构耦合作用的风振响应模态分析方法。

This paper presents a method for analyzing the wind-induced vibration which takes into account wind-structure coupling effects . The method is developed based on the quasi-stead theory by treating the wind-structure coupling effect as an aerodynamic damping .