Objective : To study the chemical constituents from the roots and rhizomes of Clematis hexapetala.目的: 研究棉团铁线莲Clematis hexapetala的干燥根及根茎的化学成分.CONCLUSION Compound ~ are isolated from Clematis genus for the first time.结论化合物...
It'snows in winter so I can make a snowman.冬天下雪,所以我可以堆雪人.We can make a snowman on a snowy day.在下雪天,我们可以堆雪人.Because I like to play in the snow and make a snowman.因为我喜欢在雪地里玩耍和堆雪人....
我不知道如何使用同温层观察镜。I don't know how to use the stratoscope.关于同温层中的粒子这一问题将另行讨论.The subject of stratospheric particles will be discussed separately.两类物质分别在同温层和对流层氧化降解.Chlorofluorocarbons and hydrochloroflorocarbons are ox...