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通风井
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通风井
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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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beam tube
beam waist
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Beam-Warming scheme
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beam-wave interaction
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beamwidth
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