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。
The function on signal amplitude density distribution is clearly defined.
明确给出了信号幅值密度分布函数的定义。
Based on Tchebycheff distribution and Taylor distribution, this paper presents a new amplitude distribution-normal distribution, the density function of which is used to design an antenna array.
本文在切比雪夫分布和泰勒分布的基础上，提出了一种新的振幅分布即正态分布，并利用正态分布密度函数来设计阵列天线。
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