The adsorption behaviour of cephalexin on hanging mercury electrode surface is reported.报道了头孢氨苄在悬汞电极表面的吸附行为.The advances in the process technology for the enzymatic synthesis of cephalexin are reviewed.综述了酶法合成头孢氨苄的工艺方法研究...
I pushed through the crowds and on to the escalator.我挤出人群，踏上了自动扶梯。I don't like escalator — I'll climb the stairs.我不喜欢自动扶梯,我要爬楼梯.You can ride the escalator up but have to descend on foot.你可以搭电梯上去,但要自己走下来....
to take a principled stand against abortion采取反堕胎的原则性立场Lovelock's principled nonconformity can be traced to his childhood.洛夫洛克自成一套的特立独行可以追溯到他的童年时期。He is a master of finagle and accommoda - tion ; he is purposeful and...