air motor shaft气动马达轴
air r shaft通风井;风井
hot air exhaust shaft排热风井
mine air return shaft回风立井
air return shaft回风井筒
air relief shaft排气竖风筒;通风竖井
air inlet shaft进气道
Air draught shaft自然送风口
air hovered shaft气浮轴承
N（名词） a shaft for ventilation, esp in a mine or tunnel (矿井或隧道中的)通风井