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单词
ventilation shaft
释义
ventilation shaft
Encyclopedia
工学
竖井
释
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。
随便看
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still image
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Stillinger-Weber potential
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still tide or slack tide
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