樹流變量 tree flow: 樹形流; 樹狀流flow variable: 流動變量; 流量變量variable flow: 變量流; 變流; 變速流;變化的流動; 異形充動slowly variable flow: 緩變流variable aperture flow meter: 變孔口流量計(jì)下載手機(jī)詞典可隨時隨地查詞查翻譯