采用高效液相色谱法同时测定了6-嗅-2-萘酚和 2- 萘酚的含量.A method for the determination of 6 - bromo - 2 - naphthol and 2 - naphthol is described.取代 2- 萘酚的氧化偶合产物的合成研究.Oxidative coupling of substituted 2 - naphthols.槲皮素与山萘酚的含量不仅与菟丝子的品种有关,而且与其寄生的...
Without mentioning our stop in Hong Kong, they suggested we take on navigators in Canton.他们根本不提我们在香港停留之事, 只是建议我们来广州接领航员登机.Hong Kong airline is increased surtax of freight service fuel 33 %.香港航空公司调升货运服务燃料附加费33%.Cathay Pac...
患者每天清晨起床不久,就咳出粘液.The patient expectorates mucus each morning shortly after rising.咳到最后他能咳出一些痰.At the end of the coughing spell , he brings up some sputum.那麽你知道要如何帮他咳出痰 吗 ?And do you know how to help him cough up sputum?...
His recent productions have been beautifully crafted works with little overt political content.他最近所创作的都是些精雕细琢的作品，少有鲜明的政治内容。The windows would probably have been crafted in the latter part of the Middle Ages.这些窗户很可能是中世纪后期精...