The pump exhaust should lead to the open air or a fume hood.
抽气泵的排气管应该导向室外空旷处或导向一座通风橱。
The paper presents the innovation measures of dedust in ore channel of iron making plant in terms of valves, exhaust hood, air curtain and control method etc.
就炼铁高炉矿槽除尘系统的方式，提出了一些革新的措施，涉及到阀门、吸气罩、风幕及控制方法等。
Exhaust air leaves the dryer through a hood and is further cleaned in cyclones or bag filters to maximize product recovery while meeting emission guarantees.
排出的空气离开干燥机防护罩和进一步清理气旋或袋式过滤器，以最大限度地提高产品的回收，同时满足排放担保。
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