“烃基化”的英语

研究了聚氯乙烯 - 吡啶树脂催化乙酰苯胺的N - 烃基化作用,反应条件温和,产品收率令人满意.This paper studied the catalytic N - alkylation of acetanilide with polyvinyl chloride - pyridine resin.方法以3-甲氧基苯硫酚和对甲氧基 - 苯乙酮为原料经溴化、烃基化、环合重排排制得目标产物.Methods: The target comp...

He recently dissuaded Ms Bridgewater from appearing on a Newsnight feature about the downturn.他最近劝阻了布里奇沃特在《新闻之夜》(Newsnight)一期有关经济低迷的特别节目中露面.He was not to be dissuaded from it.谁也不能劝阻他做此事.He was easily dissuaded from going...

vi.争辩，争吵（quarrel的过去式与过去分词形式）...

To apply engineering Methods : To the study of astronaut adaptation to weightlessness.应用 工程方法 于宇航员在无重状态下的适应性研究.The film adaptation by David Hare and by Stephen Daldry.该电影改编的作者戴维黑尔和导演斯蒂芬戴德利.The sensory system may undergo ...

“困窘”的近义词/同义词：困顿。...

她把一头稀疏的浅黄色头发向后梳，挽成了个圆髻。She had pale thin yellow hair she pulled back into a bun.稀疏的灰白头发披散在她肩头。Grey wispy hair straggled down to her shoulders.稀疏的植物只够喂养少量的动物.The sparse vegetation will only feed a small population of anim...

“呈文”的近义词/同义词：报告。...

胃周期痛...

Beauty is an attitude. It has nothing to do with age.美是一种态度，与年龄无关。The best thing to do when entering unknown territory is smile.踏入未知地带最好的对策就是微笑。You have to do everything you can. You have to work your hardest. And if you...

虹膜麻痹...

液体...

Trimethylsilyl cyclopropyl others can react with the gel the cyclopropanols when Lewis acid as ZnX 2.环丙烷基硅醚在卤化锌的作用下能够与硅胶反应生成环丙基醇....

He was inspired by fossils of armadillos and sloths.犰狳和树懒化石让他获得了灵感.Because armadillos also wandered in the desert?因为犰狳也在沙漠里晃荡?Armadillos aren't the only creatures who rely on gravity to get the ball rolling.犰狳是唯一依靠重...

The house commanded some splendid views of Delaware Bay.从这座房子可以俯瞰到特拉华湾壮丽的景致。He commanded that roads be built to link castles across the land.他下令修建连接各地城堡的道路。"Don't panic," I commanded myself.“不要惊慌，”我命令自己。...

ejaculated的音标：...

bounties的音标：...