exhaust fan

音标发音

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.
北端在E_（47）线附近掘进一条小断面排水井兼作回风井，设置抽出式风机，形成两翼对角式通风方式。
Therefore, this series is best fit for fire control fan, basement air exhaust and support system, kitchen equipment and various series of fan cabinets of air-exhausting.
因而最适合用于消防风机，地下室抽气送风系统，厨房设备和有特殊要求的各类抽，排系列风柜。
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WT35-11 attic axial fan is a low & intermediate pressure and large flow fan which may be designed as air delivering type , exhausting type or reversible double-rotation type.
WT35-11型为屋顶轴流式通风机，该风机为中低压大流量风机，可设计成送风、排风或双旋转可逆式。

a piece of equipment used to remove steam, smoke, or unpleasant smells from a room or building