[交流] 求助反应一句话，化学方面。

Originally posted by liufawen at 2011-01-09 21:58:30:
是单环芳香烃通过2个甲基取代的七环化合物

Originally posted by cailianguo at 2011-01-10 07:57:29:

单环芳烃取代2个甲基后怎么会成为7环化合物呢？

Originally posted by liufawen at 2011-01-10 07:59:23:

seven-ring compounds 不是7环化合物嘛，有没有上下文，我怎么知道是什么东西啊

Originally posted by cailianguo at 2011-01-10 12:56:25:

全文是：Molecular weights 106,156,206,256,306,and 406(which are aromatic one-ring through seven-ring compounds with two methyl substituents) are considered as representative of typical monoer mol ...

Originally posted by liufawen at 2011-01-10 14:43:19:



是不是7环化合物分解成的单环化合物？单从这句话看不出来

Originally posted by cailianguo at 2011-01-10 15:20:39:

这句话的意思是不是含有2个取代基的一环至七环化合物的意思？