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通风井
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通风井
Encyclopedia
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竖井
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ventilation shaft;air shaft
通风井
用于地下矿山新鲜风流进入井下或污风排出的井筒。保证将足够数量的新鲜空气连续供给井下各采掘作业面,并将污浊空气从矿井中排出,防止矿井内大气污染,创造安全舒适的井下作业环境。简称风井。
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frontier port city
frontier property
frontiers
frontier school
Frontiers in Ecology and the Environment
Frontiers of Bibliography
Frontier Song
frontier-style poetry
frontier tribal troops
Frontier Troops of the Southern Song Dynasty
front lighting
front line
Front Line Drama Society
Front-line Stalingrad
Frontline States
frontloader
front-mu point
Front of Literature and Art
frontolysis
frontooccipital fasciculus
frontotemporal dementia
Front Park
Front patriotique oubanguien
Front Pictorial
front plane
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