We tried to grow some copper sulphate crystals with our children.我们想跟孩子们一起制作硫酸铜晶体。Adding sulphate to the solution will give a precipitate.将硫酸盐加入该溶液会产生沉淀.More ammonium sulphate solution is being recovered in the process o...
If you want to grasp English, you must carefully discriminate synonyms.如果你想掌握好英语, 你必须仔细区分同义词.Use a thesaurus to find synonyms for two of your words.使用词典找到你的词汇中的两个同义词.This article analyzes synonyms for one object in Zhuan...