rings
n.
1.【体】吊环
1.【体】吊环
- Like the amino group, the phenolic group powerfully activates aromatic rings toward electrophilie substitution, and in essentially the same way
对于亲电取代反应，酚基基本上以同氨基一样的方式使芳环强烈活化。收藏 - May I show you gold rings or platinum ones?
您要看黄金戒指还是白金戒指?收藏 - That rings a bell.
我总算想起来了收藏 - The children are not allowed in(the school)until the school bell rings, whatever the weather
不管天气如何，铃响之前孩子们不准进校。收藏 - In older stems, only the most recent rings of xylem participate in the transport of materials. These make up the sapwood
在老茎中，仅最新的木质部环参与物质的运输。这些木质部环组成边材。收藏
开心词场背单词
名词解释：