air passage
英
美
- air n.空气;天空;空中;感觉;神态;曲调;装腔作势v.晾干;使通风;广播
- passage n.通过;通道;走廊;(文章等的)段落;(时间的)消逝
Noun:
-
a duct that provides ventilation (as in mines)
- Propeller fans are used to move free air within a room or through channels having low frictional resistance.
螺旋桨式风机通常用于房间内或通过风道时移动自由气流时,产生微弱的摩擦阻力。