城市上空罩上了一层烟雾.The sky over the city was overspread with a heavy smog.夕阳为古老的红砖墙罩上了一层暖暖的炫目光辉。The evening sun warms the old red brick wall to a radiant glow.她的眼睛开始发亮, 罩上了一层晶莹的玻璃似的东西,睫毛接连地动了几下.Her eyes glistened like glass, an...
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进展.Diglyceride, a kind of metabolic intermediate of oil & fat , can be produced biochemical and enzymatic sy...