本文用参数变异法给出串激直流电动机在不同转速情况下的运动方程的解析解，以拓宽人们分析这类问题的思路。

In this paper, parametric variation method is used in kinematic equation of series excitation direct current motor with different turning velocities.

youdao

在确定储位分配决策模型参数计算中，采用了变异系数法；

In this paper the law of coefficient of variation has been adopted to confirm decision-making model parameter of calculating;

youdao

笔者探讨了这一方法，考虑土性分布参数和荷载变异性，用二阶摄动随机有限元法进行了浅地基沉降的概率分析。

This study calculated the statistical moments of settlement for shallow foundation by using second-order perturbation stochastic finite element method.

youdao