- upcast air shaft
- upcast rentilating shaft
- 出风: air-out
- 井: well
- 风井: [矿物学] ventilating shaft; air shaft; removing shaft◇风井井筒 air shaft
- 出风: air-out◇出风井 [煤] upcast shaft; discharge air shaft; 出风口 air outlet; 出风口扩散器 diffuser; 出风扩散道 evase
- 回风井: return air shaft
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