Sodium ethylate was used as catalyst in Baker - Venkataraman of cyclization, and all factors were studied.环合反应采用乙醇钠作为Baker-Venkataraman重排反应的催化剂, 研究了影响反应的各个因素....
他走门路,给我们在客满的旅馆里弄到了一间空房.He pulled wires and got us a room at the crowded hotel.我找不到一点门路.I can't get any purchase on it.广开就业门路,积极发展 劳动密集型 产业.We should open up more avenues for employment and develop labor - intensive ...
He lives at number 3, Argyll Street.他住在阿盖尔街3号.Colin Campbell was created Earl of Argyll in 1457.科林·坎贝尔在1457年被授予阿盖尔郡伯爵的爵位.Stan Laurel was born at number 3, Argyll Street.斯坦·劳雷尔出生在阿盖尔街3号。Stan Laurel was born at number 3, A...
I read the book at a gallop.我飞快地读完了这本书。I was forced to attempt a gallop.我被迫试着骑马飞奔。He saddled his horse, mounted, and rode away at a gallop.他给马套上鞍子, 跨上马背疾驰而去....
Compared with horizontal cylinder granulating method, its mixing effect is more reasonable.较卧式湿法具有更为合理的混合效果.Separate designed hopper and granulating chamber can be dismantled easily for cleaning.分离设计,落料斗,粉碎室过滤网,便于拆洗.Mult...