Heterocyclic
[,hetәrәu'saiklik]
解释:
(adj.) containing a closed ring of atoms of which at least one is not a carbon atom .
塞西尔编辑--From WordNet
[,hetәrәu'saiklik]
(adj.) containing a closed ring of atoms of which at least one is not a carbon atom .
塞西尔编辑--From WordNet