Propyl glycidyl ether ( PGE ) was obtained from propyl alcohol and epichlorohydrin by phase - transfer catalysis.以环氧氯丙烷和正丙醇为原料,通过相转移催化法合成了正丙基缩水甘油醚.The FBC ( fluorous biphase catalysis ) is a new nonaqueous immobilization...
In specific acid catalysis, the undissociated acids do not contribute.在特殊的酸催化中, 不离解的酸不起作用.The corresponding reaction of acetaldehyde is subject to general base catalysis.乙醛相应的反应服从广义的碱催化.Catalysis has increased the rate o...
Also has many a dream kindheartedness, is loves mischievously small lovable.又有着多啦a梦的好心肠, 是爱调皮的小可爱.he behaved badly in school; he mischievously looked for a chance to embarrass his sister; behaved naughtily when they had ...
All articles in the window are dummies.橱窗里的物品都是模型.Mazing Run : A great dribbler whose quick turns and dummies are a handful for any defence.惊人突破-利用灵活转身突破防守.We've all seen enough dummies catapulting through windscree...
Primers may be any of the common rigid film formers.预涂层可以是任何常用的刚性成膜剂.Formers Farmers plant these barriers around their fields . Windbreaks fields.农民们在他们的土地周围种上防护林.Younger children live in family style houses. 6 th Former...
Drain the beans thoroughly and save the stock for soup.将豆角彻底控干，并把滤出的豆汁留下做汤。She has a knack of landing herself right in the soup.她老是让自己的处境很尴尬。Waiters went scurrying down the aisles, thumping down tureens of soup.服务员们匆匆忙忙穿...