return air shaft中文,return air shaft的意思,return air shaft翻译及用法
2026-03-22 06:37浏览次数 21
return air shaft
回风井
return air shaft 例句
英汉例句
pierce a pump shaft of small section concurrently as return air shaft at linee47 neighborhood in the north, establish the exhausting fan, become the ventilated way of opposite angle of two wing.