unloadding spout vent fan 卸料口通风风机
hold vent fan 货舱通风机
roof vent fan 屋面排风机
induced draught fan vent fan 排风机
cyclone&vent fan support level 旋风分离器和排风机支承平面
ceiling vent-type ventilating fan 管道换气扇
fan vent 扇形孔
electric fan with slit vent 条孔式电风扇
In the event of a vent fan failure, an alarm is initiated.
出现排气扇故障情况时，将出现报警。
An optional backup vent fan operates in the event of a primary vent fan failure.
如果主排气扇出现故障，则备用排气扇将启动。
The system uses a vent fan, a manually adjustable backpressure damper, a differential pressure-sensing gage, and an inlet air filter high differential pressure alarm switch.
此系统用一个排气扇，手动调节反压闸，压差传感器和一个进气过滤器压差高报警开关。
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