鍋爐內壁要洗刷一下,除去鈣質沉淀物。 The boilers will have to be scoured out to remove the calcium deposits.
把咖啡攪一攪好讓渣滓沉淀。 Stir the coffee to settle the grounds.
水冶金術通過液體過程,象過濾,提煉,沉淀等方法處理金屬,從礦石中或礦石濃縮物中分離出金屬 The treatment of metal or the separation of metal from ores and ore concentrates by liquid processes, such as leaching, extraction, and precipitation.
不要喝有沙粒狀沉淀物的葡萄酒。 You should not drink the wine with a gritty sediment.