draught fan

• 通气风扇,引风机,通风机

draught fan的用法和样例：

例句

1. The fan at the window made a small whispering roar.
   窗上的通风机发出了耳语般轻微的嗡嗡声。
2. Formula of circulating coefficient actual value calculated according to fan actual performance and characteristic dimension is discussed.
   探讨了依据通风机实际性能和特性尺寸计算环流系数实际值的公式。