Etherification of butanol with ethylene oxide by a new style solide acid catalyst is investigated.研究了丁醇和环氧乙烷在一种新型固体酸催化剂上的醚化反应.The purified rice amylose and amylopectins were obtained by n - butanol recrystallization meth...
每一部分都用图片讲解。Each section is explained pictorially.同学们对老师用风趣的方式讲解他们的错误很感兴趣.The students enjoyed their teacher's bantering them about their mistakes.你给孩子们讲解要设法讲得简单明了.Try to simplify your explanation for the children....
On the big night there was a massive turnout...在这个重要的夜晚，有大批人出席。I’ll give my room a good turnout.我要好好清扫一下房间。A high turnout was reported at the polling booths.来自投票站的消息称投票率很高。There was a good turnout for the concert.参加音乐会的人...