短語詞組短語air motor shaft 氣動馬達軸air r shaft 通風(fēng)井;風(fēng)井hot air exhaust shaft 排熱風(fēng)井mine air return shaft 廻風(fēng)立井air return shaft 廻風(fēng)井筒air relief shaft 排氣竪風(fēng)筒;通風(fēng)竪井air inlet shaft 進氣道Air draught shaft 自然送風(fēng)口air hovered shaft 氣浮軸承 返回 air shaft