The time probability of first discovering target firm obeys index distribution.
首次发现目标公司的时间概率服从指数分布。
First, a statistical inference is made of the "bulk-cargo carriers system" so as to find out the regularities of the ships' arrivals and the probability distribution of loading and unloading times.
首先对“杂货船系统”进行了统计推断，找出杂货船到港分布规律及装卸时间的概率分布。
On the basis of the advanced first order and second moment method, the partial derivatives of the failure probability to the distribution parameters of the process variables were formulated.
由求解失效概率的改进一次二阶矩法出发，给出了失效概率对中间变量分布参数偏导数的计算公式；
On the basis of the advanced first order and second moment method, the partial derivatives of the failure probability to the distribution parameters of the process variables were formulated.
由求解失效概率的改进一次二阶矩法出发，给出了失效概率对中间变量分布参数偏导数的计算公式；
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