再将硝酸纤维素滤膜置于含碱的湿滤纸上, 碱的作用是使DNA变性.The nitrocellulose filters are then placed on wet filter paper containing alkali, which denatures the DNA.目的: 测定知柏地黄丸中盐酸小檗碱的含量.Objective : To analyse the content of berberine hydrochloride...
Emerson's words might also serve as an epigraph for the pages that follow.爱默生的话也可以作为以后历史篇章的格言.Every cut of ancient epigraph of this kind is precious.这种古代金石铭文,一刻千金.As aspecial case , the viability of epigraph of a su...
What are you gazing at?你在凝视什么? stare指 “睁大眼睛、目不转睛地盯着看”,如:She was gazing at him with a soft, contented smile on her face.她注视着他，脸上带着温柔而满足的微笑。Gazing up into his eyes, she seemed to take in all he said.她抬起头注视着他的眼睛，好像听懂了他说的一切。...
Universities are facing grave problems because of diminishing resources.由于资源的减少，大学正面临严峻的问题。Two men were standing by the freshly dug grave.两名男子站在新挖的坟墓边。He did die a pauper and is buried in an unmarked grave.他死的时候一文不名，葬在一处...