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• The loads and the distribution of stress amplitude frequency are obtained by cycle count and reliable data for fatigue design are provided by probability density function fit.

循环计数法求出载荷应力频率分布，用概率密度函数拟合，疲劳设计提供可靠性高数据

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• Based on radar clutter distribution, the radar clutter model is analysed for amplitude probability density distribution and power spectrum density distribution.

雷达波的分布特性出发，分析了杂波的解析模型，阐述了雷达杂波幅度概率密度分布及其功率密度分布。

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• The probability distribution curve of the fluctuating pressure amplitude on the side wall of narrow-gap energy dissipater coincides with the normal probability curve.

窄缝消能工边墙脉动压力振幅概率分布符合概率曲线

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• Land clutter's power spectral model is presented, and the characters of the probability distribution of land clutter's amplitude are also analyzed.

地面雷达地波建模方法进行了深入研究，给出了地杂波功率模型，分析了地杂波幅度概念分布特性

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• The distribution of wall pulsation pressure amplitude probability of level spiraling flow spillway tunnel basically presents the Gauss normal distribution;

水平流泄洪洞壁面脉动压强振幅概率分布基本上呈现高斯正分布；

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• By using stochastic average method, the probability distribution function of the rolling amplitude of a ship with S-type static curves in random waves was put fowavd.

本文应用随机平均，提出5阶多项式表示稳性曲线非线性横摇运动的统计分布

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• By using stochastic average method, the probability distribution function of the rolling amplitude of a ship with S-type static curves in random waves was put fowavd.

本文应用随机平均，提出5阶多项式表示稳性曲线非线性横摇运动的统计分布

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