Water soluble hydroxypropyl � � cyclodextrin was converted to acetonyl hydroxypropyl � � cyclodextrin via selective oxidation. 通过选择性氧化,将水溶性优良的羟丙基β环糊精转化为丙酮基羟丙基β环糊精.
Burton's text is concise and informative...伯顿的文章语言简洁，信息丰富。Burton gave a kindly chuckle.伯顿和善地咯咯一笑.Burton's text is concise and informative.伯顿的文章语言简洁，信息丰富。He fled to America with Phyllis Burton, an erstwhile frie...
Does this dress make my legs look too stumpy?这条裙子会使我的腿看上去又短又粗吗？It has a short stumpy tail covered with bristles.它粗短的尾巴上鬃毛浓密。Stumpy stepped before the expectant crowd.斯顿皮一步跨到等着看热闹的人群面前....
On his desk is a mass of books and papers.他的书桌上有大堆的书籍和文件。In the spring, the meadow is a mass of daffodils.春天，草地上开满了黄水仙。Only with mass direct action will we obtain such change.只有采取大规模直接行动，我们才会取得这样的改变。...