建立了线性定常离散互联电力系统的奇异摄动模型。
A constant linear discrete time interconnected stochastic power system is represented in a singularly perturbed form.
对可见的卫星轨道部分先进行粗略定位，然后加入摄动模型进行精确求解。
For the visible parts, their rough location are done advanced, and then the perturbation model into the rough results is added in.
研究了一类ENSO摄动模型。利用摄动理论和方法，构造了相应问题的渐近展开式。
A class of ENSO perturbed model is studied. Using the perturbation theory and method, the asymptotic expansions of solution of corresponding problem are constructed.
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