根据附件的等效单自由度模型设计吸振器参数，以获得最优的减振效果。

Parameters of the absorber are designed according to the equivalent single degree of freedom model of the appendage.

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本文采用“自由振动法”，设计了一个等效单自由度振动体系，对某核电站基岩的阻尼特性进行了实验研究。

The damping characteristics of the bedrock in a nuclear power station are studied experimentally by free vibration system with one degree of freedom.

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通过和单自由度线性弹簧-质量-阻尼系统进行比较，得到该带裂缝梁结构的等效自然频率和等效粘滞阻尼比。

The equivalent viscous damping ratio and the equivalent natural frequency are obtained by comparing the system with a purely linear, spring-mass-damper system of single freedom.

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