短語詞組短語free stream velocity 自由憐速度flow stream velocity 液流速度approach stream velocity 迎流速度stream velocity fluctuation 流速脈動mean stream velocity 平均流速free -stream velocity 自由流速度cross stream velocity component 橫向分速度arbitrary free stream velocity 任意自由流速;任意自由流速英語variable free stream velocity 變自由流速度 返回 stream velocity