网络日益复杂和异构化，迫切需要高可靠、跨平台的网络管理系统保证网络稳定、高效率运行。
With the complication and isomerization of networks, a high reliable and astride platform networks management system awfully needed to guarantee it work stably and high efficiently.
为提高稳定计算的效率，对复杂的电力系统模型进行化简，以实现系统化降阶非常必要。
For improving the efficiency of power system stability analysis, it is necessary to study two time scale dynamic models of power systems and relevant model reduction.
系统受过度捕捞渔业影响很大，并存在营养级I利用效率低和渔业资源小型化、低值化等不稳定的幼态特征。
The ecosystem appears to be a young weak one caused by overfishing, with small and low-valued fishes dominated and low ecotrophic efficiency for trophic level I.
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