This article analyses the present situation of water-using level, efficiency and water-saving protentialities of Chaohu city and also puts forward concerned water-saving measures.

文章分析了巢湖市用水现状、效率及节水潜力，提出了相应的措施。

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These developments could deliver a new level of efficiency and stability in the global economy.

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The engine performs with a level of efficiency close to diesel, but sacrifices some of the power density.

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And it can be impossible without a state that operates at a minimum level of efficiency, which many tropical countries fall short of.

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