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.
用循环计数法求出载荷及应力幅频率分布，用概率密度函数拟合，为疲劳设计提供可靠性高的数据资。
Based on radar clutter distribution, the radar clutter model is analysed for amplitude probability density distribution and power spectrum density distribution.
从雷达杂波的分布特性出发，分析了杂波的解析模型，阐述了雷达杂波幅度的概率密度分布及其功率谱密度分布。
The probability distribution curve of the fluctuating pressure amplitude on the side wall of narrow-gap energy dissipater coincides with the normal probability curve.
窄缝消能工边墙的脉动压力振幅概率分布符合正态概率曲线。
Land clutter's power spectral model is presented, and the characters of the probability distribution of land clutter's amplitude are also analyzed.
对地面雷达地杂波建模方法进行了深入研究，给出了地杂波功率谱模型，分析了地杂波幅度概念分布特性。
The distribution of wall pulsation pressure amplitude probability of level spiraling flow spillway tunnel basically presents the Gauss normal distribution;
水平旋流泄洪洞壁面脉动压强振幅概率分布基本上呈现高斯正态分布；
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.
本文应用随机平均法，提出了用5阶多项式表示稳性曲线的非线性横摇运动的统计分布。
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.
本文应用随机平均法，提出了用5阶多项式表示稳性曲线的非线性横摇运动的统计分布。
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