emergency gate shaft
... 事件;事故：incident 事故门井：emergency gate shaft 事故门槽：emergency gate slot ...
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研究表明，事故门井卷吸空气，形成明满交替流是造成一系列不良水力现象的前提。
It is indicated that the suction of air from the emergency ventilating shaft is the reason to cause the harmful hydraulic vibration.
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