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- Abstract： Bridged imine acetamide was synthesized via the reactions such as triacetylation,bridge formation,reduction and acetylation,using Ery A oxime as the starting material. 摘 要： 以红霉素肟为起始原料,经三乙酰化、桥化、还原、乙酰化四个步骤合成桥红霉素亚胺,总收率28%25。
- And the suspension bridge from hanging vines. 悬索桥受到了悬挂着的藤的启发。
- The frail wooden bridge cracked. 这座不牢固的木桥断裂了。
- I have not the least idea about how to play bridge. 我一点儿不知道怎样打桥牌。
- As the day was wet we stopped in and played bridge. 由于下雨，我们没出去，在家打桥牌。
- I think I'm lost; I can't find the bridge. 我想我是迷路了，我找不到那座桥了。
- The old bridge gave away by the recent flood. 最近一场洪水冲坍了那座旧桥。
- The car rushed at the bridge at astonishing speed. 汽车以惊人的速度向桥冲过去。
- Politeness will bridge over many difficulties. 举止文雅会使你渡过许多难关。
- Her front teeth were irregular in formation. 她的门牙排列不整齐。
- They marched in parade formation. 他们以列队的阵式行进。
- Sometimes they played bridge together. 有时他们在一起打桥牌。
- It's a bridge of steel framework. 那是座钢铁结构的桥梁。
- The bridge is now open to traffic. 这座桥现在可以通行。
- The formation of two ordered files from one regular file. 把一个正规文件分成两个有序文件的过程。
- Henry is a past master at bridge. 亨利是打桥牌的高手。
- The soldiers blew up the bridge. 士兵们炸毁了那座桥。
- The natural process of bone formation. 成骨骨头形成的自然过程
- How can we bridge the gap between rich and poor? 怎样才能缩小贫富之间的差距?
- The formation and development of bodily tissues. 组织发生身体组织的形式的发育
