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。
Vent - Consider using a fan and outside air to cool your home.
发泄-考虑利用风扇和室外空气冷却,你的家。
Fan, pump, air duct, water pipe, vent.
风机,水泵,风道,水管,风口。
Fan, pump, air duct, water pipe, vent.
风机,水泵,风道,水管,风口。
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