The feasibility of applying natural draft ventilation in Taopinghe phosphate mine was studied from bath aspects in theory and practice .
从理论和实践两方面分析了桃坪河磷矿采用自然通风的可行性。
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，工作室顶部被设计成像烟囱通风那样，以此来达到更高效的通风效果。
This kind of boiler without mechanical ventilation of blowers and induced draft fans is distinguished as natural draft boilers.
这种不采用鼓、引风机机械通风的锅炉，称之为自然通风锅炉。
This kind of boiler without mechanical ventilation of blowers and induced draft fans is distinguished as natural draft boilers.
这种不采用鼓、引风机机械通风的锅炉，称之为自然通风锅炉。
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