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- ring closing reaction 闭环反应
- Recent advances in ring closing metathesis (RCM) reaction, including olefin and enyne metathesis reaction are reviewed. 综述了近几年来关环复分解(RCM)反应的研究新进展,包括了烯烃、烯-炔的RCM反应。
- Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene. 关环转换反应是形成碳碳双键的重要反应之一,即双烯化合物在金属碳烯催化下关环得到环烯类化合物。
- This paper introduces a finger-helped method to show the ring opening and the ring closing of electrocyclization,and give the correct configuration of the related products. 通过对平膜压电谐振式结冰传感器的几种测量方案的分析,提出一种开环扫频的信号检测方法。
- Despite a pro-bullfighting lobby, attendances wane and rings close. 尽管有支持斗牛的协会在，可是观众越来越少，并且斗牛场也关闭了。
- The Application of Ring Closing Metathesis Reaction in the Synthesis Procedure of Natural Products 关环转换反应在天然产物合成中的应用
- She had the sapphire set in a gold ring. 她把那枚蓝宝石镶在金戒指上了。
- The diamond ring dazzled with brilliancy. 这只钻石戒指闪耀夺目。
- She wears a diamond ring on her left hand. 她左手上戴着一枚钻石戒指。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- The days are closing in now that autumn is here. 秋天来到了，白天渐渐短了。
- The store is closing out a large stock of toys. 该店正减价出售大批玩具存货。
- People say that the tiger is still lurk close to. 人们说那只老虎还躲在附近。
- I am sorry-she's out. Can you ring again later? 对不起－她出去了。你过些时候再打电话来好吗？
- Closing time at this pub is eleven o' clock. 这酒馆的打烊时间是十一点。
- The boys and girls made a ring round us. 男孩和女孩围着我们站了一圈。
- Please ring for the attendant if you need anything. 如果需要什么，请按铃找服务员。
- The music was so loud it made my ears ring. 音乐的声音太大了，把我耳朵震得直响。
- The policeman felt that my story didn't ring true. 警察认为我讲的话听起来不可信。
- She is buying a flat close to her office. 她正在购买一套靠近她办公室的单元房。
