讨论了一般微分单项式的导数的值分布，提出一个新的定理，并进行较为详细的证明。
The paper discusses the value distributions of the derivative of differential monomials, presents a new theorem and proves it in more details.
首次给出了电池内的速度导数分布，得出了一些新的结论。
For the first time, derivative distribution of velocity in cell is presented and some new conclusions are obtained.
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.
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