purine ring

purine ring 基本解释

网络  嘌呤环

化学

重点词汇

• ringn. 环, 环形物, 拳击场, 戒指, 角逐, 小集团, 铃声, 钟声, 声调 vt. 包围, 套住, 按铃, 敲钟 vi. 成环形, 响, 鸣, 按铃, 敲钟, 回响
• purinen. 嘌呤 [化] 嘌呤

purine ring 双语例句

1. 1、 In other words, replacement of the number 8 carbon by nitrogen in the purine ring does not eliminate activity.
   换句话说，嘌呤环上第8位碳被氮所取代并不丧失活性。
2. 2、 The derivative of adding substitution groups in purine ring s 2 or 6 or 8 atoms are important organism medicine activating substances useful as an antiviral, anticancer, and hypotensor drugs. So study of purine derivative has important meaning.
   在嘌呤环的2,6或8位碳原子上引入某些取代基团所得的衍生物具有抗病毒、抗癌和降血压等重要的生物医学活性，因此对嘌呤衍生物的研究具有重要意义。
3. 3、 If the 6-C in the ring is replaced by N, the distribution of electron density of purine ring must be changed.
   将嘌呤6-位氨基或氧用6-氮杂代替，必将引起嘌呤环电性效应的改变。