单词：air passage
air passage的用法和样例：
例句
- 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。
单词：air passage 相关文章
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