这些参数导致了特定固定相的分离行为.These parameters contribute to the chromatographic behaviour of a particular stationary phase.方法使用薄层色谱法, 以硅胶 GF254 为固定相.Methods: TLC method was applied , the stationary phase was GF _ ( 254 ).考察了一些手性化合物...
The case - hardening or carburizing process is in wide use.表面淬火 或渗碳法应用十分广泛.Campus environment to achieve the " hardening, green, landscaping, clean up. "校园环境实现了 “ 硬化 、 绿化 、 美化 、 净化 ”.The material with high water is a new...
She was forever running errands for her housebound grandmother.她总是在为她不方便外出的祖母跑前跑后。He often runs errands for his grandmother.他经常给他的祖母跑腿儿。I have a few errands to do in the town.我在城里有些差事要办....