The frequency shift is obtained and compared with the effect of air damping.

Air damping coefficient is a very important aerodynamic parameter.

空气阻尼系数是一种重要的气动力参数。

An optimal method to determine air damping coefficient of the trajectory

求取弹道空气阻尼系数的最优化方法

Moreover, the ductility level, damping ratio and natural period of systems produce important effects on the energy spectra of bilinear SDOF systems, and the effect of yield stiffness ratio can be neglected.

体系延性系数、阻尼比、自振周期是影响双线性SDOF体系能量谱的重要因素。

Semi-rigid connection has the advantages of both the rigid connection and hinged joint, which can increase structural damping, lengthen period, and decrease vibrational amplitude, so that alleviate seismic hazard.

半刚性连接兼有刚性和铰支连接的长处，可增加结构的阻尼，延长周期，减小震幅，从而降低震害。

His paper introduces the practice on putting blast furnace fans in the big system of air providing and air using to raise the halting rate during the blast furnace damping down period of 2.5 ￣ 4h to save electricity.

介绍了将高炉风机置于供风、用风大系统中，提高其在2.5～4h高炉休风区间的停机率以达到节电的实践。

The paper analyzes the disadvantage of general damping period measurement method of dial instrument, researches a automatic damping period measure method, which is based on image recognition.

分析了常用仪表阻尼时间测量方法的弊端，研究了一种基于图像识别的自动阻尼时间测量方法。

The new method can measure damping period of dial instrument rapidly and accurately.

该方法能够快速、确地测量指针式仪表阻尼时间。

Damping Period Measurement Method of Dial Instrument Based on Image Recognition

基于图像识别的指针式仪表阻尼时间测量方法

Computer Simulation on the Radiation Damping and Relaxation Processes in NM

核磁共振弛豫和辐射阻尼效应的计算机模拟

Effect of radiation damping on seismic response of structures

地基辐射阻尼对结构地震响应的影响

Random vibration analysis of arch dam in consideration of radiation damping

考虑辐射阻尼的拱坝随机振动分析

Effect of radiation damping on nonlinear response of high arch dams

地基辐射阻尼对高拱坝非线性地震反应的影响

Simplified analysis solutions are obtained for damping force and damping coefficient.

得到了阻尼力和阻尼系数的简化解析解。

Design and Research of MR Damper for Small Displacement& Big Damping Force

一种小位移大阻尼力磁流变阻尼器的设计与研究

Research of Non-Linear Model for Vertical Damping Force of Air Springs

空气弹簧垂向减振力非线性模型研究扭振减振[阻尼]器

Structural design of MR damper and experimental study for performance of damping force

磁流变阻尼器的构造设计及其阻尼力性能的试验研究

Analyzing the transfer function, it shows that the gain factor, natural frequency, damping ratio are key factors affecting the system performance.

通过传递函数分析可知，决定系统的主要性能参数有增益、固有频率、阻尼比等。

From the response curve, the dynamic performance indexes are obtained, including the natural frequency and damping ratio.

用冲击响应法和阶跃响应法对腕力传感器进行了动态标定，计算出了传感器的固有频率和阻尼比等动态性能指标；

Measurement of natural frequency and damping ratio of suspension

汽车悬挂系统固有频率与阻尼比的测定试验

Mode, natural frequency and damping ratio of test results are obtained.

得到了复合墙板的振型、固有频率和阻尼比等试验结果。