The diisobutyl dicarboxylate was prepared by using acid and isobutanol as material and acid as catalyst.以二羧酸和异丁醇为原料,用硫酸作催化剂,合成二羧酸二异丁酯.Conducting polyaniline ( PANI ) and poly - O - methylaniline ( POT ) were prepared by ...
Good luck is when an opportunity comes along and you're prepared for it. 好运就是当机会来临时，你早已做好了准备。Many students are not adequately prepared for higher education.许多学生并未做好接受高等教育的充分准备。A minority of officers were prepared to...
The British attacked twice during the Napoleonic wars in the early 1800 s.在19世纪初,拿破仑战争期间,又遭到了英国人的两次攻击.When he attacked me, naturally I struck back.他攻击我时我自然要进行还击。The protestors attacked the reputation of the politician.反对...
他在翻译方面有很深的造诣.He is deep in translation.我们无法估量他在科学上的造诣.We can't exaggerate his scientific attainment.他是位造诣很深的学者.He is a scholar of the highest attainments....