outer&duct 外风道
bracket for outer duct 外风道固定板
Damper of outer duct 外风道盖板
inner-outer duct flow mixer [动力] 内外函气流混合器
outer duct 外部管道
engine inner and outer duct 发动机内
The floated sanitary straw is mainly one long straight water drinking duct, and features the float in the outer wall of middle part.
本发明公开了一种自浮式卫生吸管，主体为一根长直饮水导管，其特征在于：所述导管中间部分的外壁上有一个浮子。
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