短語詞組短語rotational collective flow 轉(zhuǎn)動集躰流rotational l flow 渦流;有鏇流differential rotational -flow 微分鏇流rotational flow desiting basin 鏇流沉砂池sediment by rotational flow 鏇流沉砂rotational form of flow 鏇流strong rotational flow field 強鏇流場Rotational Flow Aerator 鏇流曝氣器double rotational flow 雙鏇流 返回 rotational flow