• The feasibility of applying natural draft ventilation in Taopinghe phosphate mine was studied from bath aspects in theory and practice .

    理论实践两方面分析了桃坪河磷矿采用自然通风可行性

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  • For the same reason, the top of the buildingwas designed to work as a chimney draft, in order to get a highly efficient natural ventilation system.

    同样,工作室顶部设计成像烟囱通风那样,以此达到高效通风效果。

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  • This kind of boiler without mechanical ventilation of blowers and induced draft fans is distinguished as natural draft boilers.

    这种采用鼓、引风机机械通风锅炉,称之为自然通风锅炉

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  • This kind of boiler without mechanical ventilation of blowers and induced draft fans is distinguished as natural draft boilers.

    这种采用鼓、引风机机械通风锅炉,称之为自然通风锅炉

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