These liabilities prompted development of agarose and agarose - acrylamide gels.这些不稳定性促使琼脂糖和琼脂糖 -- 丙烯酰胺凝胶的发展.Diacetone acrylamide ( DAAm ) was prepared by reacting acrylonitrile with diacetone alcoholammonia.以二丙酮醇和丙烯腈为原料...
He tossed back his head and keened...他仰天恸哭起来。She keened to herself for a moment.她独自嘤嘤了一阵.The bereft girl keened her sorrow.那个失去亲人的姑娘哭出自己的悲痛之情.He tossed back his head and keened.他仰天恸哭起来。...
Instead of complaining about what's wrong, be grateful for what's right.别抱怨不好的事，要对好的事心存感恩。We are grateful to you for permission to reproduce this article.非常感谢您允许我们复印这篇文章。He was grateful for a chance to relax an...
I unluckily had a flat tire on the way here.到这儿来的路上,不幸我的车胎泄气了.A flat tire put my bicycle out of commision.车胎跑气使我的自行车无法使用.Todd changed her flat tire quickly.陶德很快便将她的破轮胎换好....
He mistakenly ascribes the expression "survival of the fittest" to Charles Darwin.他错误地认为“适者生存”是查尔斯·达尔文说的。Natural selection ensures only the fittest survive to pass their genes on to the next generation.自然选择确保只有最适应环境的物种得以...