短語詞組短語crossflow vortices 橫流旋渦系Taylor vortices Taylor 渦binary vortices 雙渦旋vortices control 渦控制Karmen vortices 卡門渦街tip vortices 端部渦separation vortices 分離渦vortices structure 渦結構cyclonic vortices 氣旋性渦旋 返回 vortices