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- The calculated results show that the aza Wittig reaction is a two step reaction, having one four membered ring intermediate on its reaction surface. 计算结果表明该反应是一个二步反应，在反应途径上存在一个四元环中间体。
- Carbocyclic Compounds three-and four membered rings 碳环化合物三元环和四元环
- four member ring heterocyclic compound 四元杂环化合物
- This interface includes four member functions: Flap, Paddle, Quack, and Walk. 此接口包括四个成员函数:Flap、Paddle、Quack和Walk。
- Method Treatment of 8,9 anhydroerythromycin 6,9 hemiketal with iodine in the alkaline solution provided corresponding N monodemethylated 12 membered ring erythromycin derivative. 方法8,9脱水红霉素6,9半缩酮与碘在碱性溶剂中反应得到相应的N去甲基十二元环红霉素衍生物。
- Four members of the family had been poisoned to death. 这家有四口人被毒死。
- We'd be crazy to sign up four members of Levien staff. 除此之外,我们不能再雇佣你们的其他员工了。
- The four members in his family are harmonious, and happy. 他们一家四口和乐融融。
- The characteristic vibrational modes were assigned to the planar six membered ring (B 3O 6) 3- and tetrahedral BO 4. The vibrational spectra of CBO, CLBO, and Lithium triborate (LBO) were compared and the effect of cation was discussed. 然后比较了CBO，CLBO和LBO（LiB3O5）三种晶体的晶格振动光谱，讨论了阳离子对振动光谱的影响。
- Interfaces can be made up of methods, properties, events, indexers, or any combination of those four member types. 接口可由方法、属性、事件、索引器或这四种成员类型的任何组合构成。
- Our four member countries of Cambodia, Lao PDR, Thailand and Viet Nam meet regularly to make decisions about development in the Mekong Basin. 湄公河委员会目前有四个会员国：柬埔寨、老挝、泰国和越南，我们有定期的会议一起来讨论作出关于湄公河流域发展的决策。
- An election year is one in which all four members are evenly divisible by four. 选举年是年份的四位数字能被4整除的年。
- The US was one of four members to abstain, along with Haiti, Israel and Palau. 美国是四个投弃权票的国家，其它三个国家是海地，以色列和帛琉共和国（帕劳）。
- Four members in our dormitory stayed up late one the other day and chatted. 我们寝室四个人有一天很晚都没有睡，在聊天。
- eight member ring heterocyclic compound 八元杂环化合物
- The Hong Kong Bar Association and the Law Society of Hong Kong each nominate four members to sit on the council of the service, which manages and administers its operations. 香港大律师公会和香港律师会各自提名属下四名会员加入当值律师服务理事会，负责服务的管理和行政工作。
- nine member ring heterocyclic compound 九元杂环化合物
- Now only four members remain in the EFTA: Iceland, Liechtenstein, Norway and Switzerland. 然而，如今只剩下冰岛、列支敦士敦、挪威与瑞士四国。
- three member ring heterocyclic compound 三元杂环化合物
- But all four members of the family were good sports, so we soldiered on to the fourth column. 但是一家四口都有体育精神，所以我们向第四列进发。
