... random event 随机事件，偶然事件 random excitation 无规则扰动；随机激振 random failure 随机故障，偶然故障 ...
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采用机械阻抗原理，给出了轮轨系统随机激振力功率谱密度函数的理论计算方法。
A theoretical method of the PSD of random excitation force in Wheec-rail system is advanced on the principle of mechanical impedance.
随机减量技术的主要优点是，它只要求测量动力响应而不要求测量引起该响应的随机激振。
The major advantage of the Randomdec is that it requires only measurements of the dynamic response and not the random excitation causing the response.
本文应用非线性谱分析法对随机激振位移作用下大位移单摆的非线性随机响应进行了分析。
Under the action of random exciting displacement, the response of a simple pendulum with large displacement was studied in this paper by means of nonlinear spectral analysis.
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