短語詞組短語bed of absorbent material 吸附劑物料床;詳細(xì)翻譯drainage of bed material 床料排放amount of bed material 物料量composition of bed material 床沙級(jí)配sorting of bed material 床沙分選armoring of bed material 床沙粗化exchange rate of bed material 床沙交換速率filter bed of double -deck material 雙層濾料濾池non -uniformity of bed material 床沙非均勻性 返回 bed of material