The inspector asked the restaurant to replace the filter on the airextractor .
监察员要求餐馆更换排气扇的过滤网。
2
The utility model discloses a sowing barrel with an inner airextractor pulled by a bearing which is mounted on a gas pipe axle connected with an air pump.
本实用新型公开了一种内置气吸式播种滚筒，它由轴承带动转 动。
3
Air accumulation in the condenser owing to insufficient output of airextractor can increase the terminal temperature difference and the air pressure component.