主风道 meaning in English
air main
air trunk
Examples
- Drying part : drier including conveyor roller , reduction drive , roller chain , wheel , main wind channel , circle wind channel , exhaust and distributor
（三）烘干部分： （干燥机）由输送辊、减速机、托辊链条、链轮、主风道、回风道、排气系统及分配器组成。