The probability density function, cumulative distribution function, average level crossing rate and average fade duration of each composite fading channel are analyzed, and some uniform expression.

给出了各种复合衰落的概率密度函数、累积分布函数、平均电平交叉率、平均衰落时间的统一表达式。

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The relative risk of these chemicals was also investigated based on cumulative probability distribution curves, which were generated based on both exposure and acute toxicity data.

根据各物质的环境暴露浓度和相应急性毒性值的累计概率分布曲线估计了各物质相对风险性的大小。

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By comparing their fitting compatibility and the cumulative failure probability curve, the advantage of the Weibull-distribution based regression is concluded.

通过拟合优度和累积失效率曲线形态的对比，说明了威布尔分布用于曲轴失效数据分析的优越性。

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