The fan at the window made a small whispering roar. 窗上的通風(fēng)機發(fā)出了耳語(yǔ)般輕微的嗡嗡聲。
The UK Building Regulations permit ventilation fans to be eliminated if trickle ventilators and passive stack extract vents are provided. 英國建筑規范允許在設有細流通風(fēng)設備和被動(dòng)式的煙囪排煙道的情況下，通風(fēng)機可以不設。
This car has a fan cooled radiator. 這部汽車(chē)有臺風(fēng)扇冷卻的散熱器。
A higher fan spin rate leads to greater air flow. 風(fēng)扇扇頁(yè)轉速高，則風(fēng)力大。
