本文讨论任意粘性阻尼线性系统的固有振动，说明它在求系统响应和识别中的作用。
The natural vibration of linear systems with any viscous damping was discussed in this paper, its applications to the response and identification of the systems were explicated.
利用常微分方程组理论在较一般条件下求出了线性有阻尼多自由度振动系统对任意外激励的精确响应。
Exact response of damped linear vibrating systems to arbitrarily excitation is obtained according to theory of ordinary differential equations.
建立了具有线性阻尼的秋千参激振动的数学模型，并对秋千的运动行为作了理论分析与数值模拟。
A mathematic model of the linear damped oscillation of swing with parameter exciting is presented. The theoretical analysis and numerical simulation for the motion behavior of swing is done.
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