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- The structures of spiro compounds(8)and cyclocompounds(9)were determined by spectral analysis. 螺环化合物8和环状化合物9的结构由波谱分析给予确定。
- Keywords spiro compound;terpene;charigrene;synthesis; 螺环化合物;倍半萜;花柏烯;全合成;
- Keywords Systematic nomenclature;Ylene substitution;1;1-Cyclobutylenedimethoxy;Spiro compound;Spiro dendrimer;Multispiro compound; 系统命名;亚基取代;1;1-亚环丁二甲氧基;螺环化合物;螺环树枝状化合物;多螺环化合物;
- The letter was written on a single sheet of paper. 这封信只用一张纸写成。
- One single, second class, to winchester, please. 买一张去温撤斯特单程二等票。
- He got over the stream with a single leap. 他一跃就跳过了小溪。
- The bridge crosses the river in a single span. 河上那座桥是单跨桥。
- Do you want a single or a return ticket? 你要单程票还是往返票?
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- I have had to work for every single penny I earned. 我挣的每一便士都是辛苦工作得来的。
- The huntsman fired a single shot at the lion and settled its hash. 猎人朝那只狮子开了一枪，把它打死了。
- spiro compound 螺环化合物
- Five twenties and ten single, please. 请给我5张20元的和10张1元的。
- She wore a single orchid on her evening dress. 她在晚礼服上缀着一朵兰花。
- Up to yesterday, I thought he was single. 直到昨天，我一直以为他是独身。
- Can you let me have a room with two single bed? 可以给我一间两张单人床的房间吗？
- One of four offspring born in a single birth. 四胞胎之一一胎出生的四个孩子中的一个
- For strong sewing use double, not single thread. 为了缝得牢，用双线，而不要用单线。
- A single grain of a cereal plant. 谷粒禾谷类作物的一个颗粒
- A single room with a bath, if possible. 如果可能，要一间带浴室的单人房。
