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As power market reformation carries on, power grid is in difficult status at the aspects of modulating peak effectively, operating safely and stably and supplying power reliably. Pumped storage power station has an important effect on safe, stable and economical operation of power grid. Research on benefit's comprehensive evaluation and operation mode of pumped storage power station is the avant-courier and difficulty in the domain of technology economy and management, which has important theory research value and practical significance.

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The traditional Chinese pusher train in staggered formationwas developed to inlignated barge train in the course of specializa-tion of inland waterway transportation, which brought abouttangible economical benifit.

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