短語(yǔ)詞組短語(yǔ)flow -velocity 臍動(dòng)脈血流flow regulating velocity system 節(jié)流調(diào)速系統(tǒng)flow stream velocity 液流速度flow gas velocity 氣流速度feed flow linear velocity 水流線速度Flow propagation velocity 血流傳播速度;流播散速率;期血流播散速率;速度flow down velocity 下移速率 返回 flow velocity