They were principally used to catalyze aldol, allylation, Diels - Alder, ene and Friedel - Crafts reactions.它们主要被用来催化Aldol, 烯丙基化, Diels-Alder, Ene和 Friedel -Crafts等反应....
Yeast is a single - celled organism complex to study for initial screening purposes.选择酵母是因为酵母是单细胞生物,便于研究.Fully understanding its harmfulness, one adopt preventive measurment to prevent organism invasion.充分了解其危害, 采取防范措施,防...
我决定去隔壁那家要点吃的。I decided to go to the next house and ask for food.他讨论的要点实际上根本不重要。The substance of his discussions doesn'treally matter.当地人在这一要点上达成了共识。The natives uniformly agreed on this important point....
这些再循环方案在多塞特郡的农村地区首先试用。The recycling scheme gets its first try-out in rural Dorset.城市将采取有力的措施阻止再循环.Cities will have a powerful incentive to discourage recycling.在火花点火的发动机中, 再循环的一部分废气减少了氧化氮的有害污染物.In the spark - ignition en...
They learnt a lot from the initial market testing exercise.他们从最初的市场测试中了解了许多信息。The aim of this initial meeting is to clarify the issues.本次初步会议的目标是澄清这些问题。I'm also not crazy about the initial terms of the deal.我对该协议的最初...