两个自由羟基,都容易酯化.Both the free hydroxyl groups readily undergo esterification.多数情况下水解速度较酯化速度低得多.The rate of hydrolysis is for the most part significantly lower than the esterification rate.探讨了PET酯 化、聚合生产过程对熔体直接纺丝的影响.The effe...
好吧，不管怎样，还是要感谢你所做的一切。Well, at any rate, let me thank you for all you did.达尔文的语言无论对专家还是非专业人士而言都明白易懂。The language of Darwin was intelligible to experts and non-experts alike.我还是认为我能再稍微多付出一点儿。I still think I have a bit more ...
我们唯一能够联络到的电工离这里有好几英里远。The only electrician we could get hold of was miles away.我们要请电工修理熨斗.We need an electrician to mend the iron.这些女电工真能干.These women electricians really know their job....