本文给出了一维单峰映象混沌运动功率谱数值计算的公式、方法及系统结果，并对其物理图象进行了分析。

The numerical calculation formula, the method and the systematic results of the power spectrum of chaos motion in one-dimensional map are given, and the physical graphs of power spectrum are analysed.

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地震地面运动功率谱模型采用两次过滤白噪声模型，建立了地震地面运动谱强度与最大加速度均值之间的关系。

Its power spectral model is the twice-filtered white noise model. Moreover, the relation between the power spectral intensity and the mean value of maximum ground acceleration is set up.

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四冲程发动机本与此同进气阀运动类型的类型，但以使增压器的功率损耗密度，这些都是为米勒循环发动机众所周知的。

Four-stroke engines of this type with this same type of intake valve motion but with a supercharger to make up for the loss of power density are known as Miller cycle engines.

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