回流(冷卻)
Because the reaction is exothermic, remove the heating device as soon as the mixture begins refluxing. 因本反應(yīng)為放熱反應(yīng)，當(dāng)開始回流時(shí)即撤去火源。
The refluxing method is better than the soaking method in determing the content of the polysaccharide. 采用回流提取法比模擬泡茶的方法提取的多糖要高。
