precipitated out 怎样理解? the dialyzed solution was reduced under vacuum to 500ml and the product precipitated out with methanol (5l). 透析液抽真空减少到500ml,然后用甲醇(5l)沉淀出产品。(至于抽真空是否与过滤同时进行,从所提供资料中看不出) the solid was filtered, washed with methanol, acetone and mtbe and crushed to a fine powder and dried to give 95g. 固体分别经甲醇、丙酮及mtbe洗涤过滤,然后粉碎成细粉,干燥,得到95g(产品)。查看更多