In the epoxidation, chloroform and t butanol gave the best results.在环己烯环氧化反应中, 以氯仿和叔丁醇为溶剂时,环氧化反应的结果最好.The definilion of kauri - butanol value and its determination method is described.文章叙述了“溶剂汽油”一词的由来,K. B.值的定义及测定方法.The ...
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...
他现在就读于萨里大学，攻读数学学位。He is now reading for a maths degree at Surrey University.他选择了攻读耶鲁大学的经济学硕士学位。He took a master's degree in economics at Yale.计算才能对于攻读这个学位的学生有益处。An aptitude for computing is beneficial for students t...
在挑选长筒靴的时候，购买上等的好皮靴将是明智的选择。When selecting boots, fine, quality leather will be a wise investment.他穿着马裤和长筒靴，靴上带着马刺。He was wearing riding pants, high boots, and spurs.一双绿色的长筒靴a pair of green wellies...
But there are a few studies about asexuality out there.但也确实有一些发表了的关于无性恋的研究.In the animal kingdom, asexuality definitely exists.在动物王国中, 无性恋绝对存在.This asexuality seems to have arisen only once, yet biology recognises about ...
NAA或6 - BA会引起马铃薯叶肉原生质体的褐化,但二者互作时却又抑制了原生质体的褐化.NAA or 6 - BA could cause the browning of mesoplyll protoplasts of potato.结果表明:培养基pH6.5或培养温度20℃时外植体褐化率最低.The browning rate was the lowest at pH 6.5 or 20℃.多酚氧化酶 ( PolyphenolOx...
Einstein had the chutzpah to discard common sense and long-established theory.爱因斯坦敢于抛弃常识和长期公认的理论。The book's aim was to make economic theory more digestible.该书的目的是要让经济学理论更加简单易懂。We shall first look briefly at the hist...
The general condition is bettering instead of worsening.一般的情况不是在恶化而是在好转.He had dedicated his life to bettering the lot of the oppressed people of South Africa.他毕生致力于改变南非受压迫人民的命运。He recorded a time of 4 minutes 23, better...