ventilation duct
短语词组
- ventilation E duct 通风管道
- ventilation ĥ duct 通风管道
- dry well ventilation exhaust duct 干井通风排气道
- geosynclinal ventilation duct 地槽风道
- radial ventilation duct 径向通风沟
- ventilation duct spacer 风道隔片
- without ventilation duct 无通风道 返回 ventilation duct