这些不稳定性促使琼脂糖和琼脂糖 -- 丙烯酰胺凝胶的发展.These liabilities prompted development of agarose and agarose - acrylamide gels.琼脂糖是一种天然的直链多糖.Agarose is naturally linear polysaccharide.方法: 淀粉 - 琼脂糖混合凝胶交叉电泳.Methods: Cross electrophoresis of...
在她的手提包里发现了一张皱巴巴的小纸片。A crumpled scrap of paper was found in her handbag.她在一张纸片上匆忙而潦草地写了下来。She wrote it hastily and messily on a scrap of paper.她把那些硬纸片放进了口袋。She put the pieces of card in her pocket....
Vanadium seldom forms mineral deposit. It is mainly exist in vanadium titanomagnetite coal gangue and claystone.钒一般很少单独形成矿床, 它主要赋存于钒钛磁铁矿、石煤矿、粘土岩中.Coupled unsaturated flow in claystone has high effect on strength and stab...
The project is taking a long time but is now nearing completion.这个项目耗时很长，但现在就快结束了。The project is nearing completion.这个项目即将结束。The aircraft was nearing obsolescence by early 1942.这种飞机在1942年年初就濒临淘汰了。...