短語詞組短語drag of flow 阻力系數(shù)drag reduction flow 減阻流動drag -flow 拖動流high drag turbulent flow regime 大阻力紊流狀態(tài)drag reduction of flow 流動減阻drag flow along channel 沿螺槽推進流drag flow constant 推進流常數(shù)drag flow capacity 推進流流量 返回 drag flow