| 单词 | heterocyclic ring |
| 释义 | heterocyclic ring (once / 1688473 pages) n WORD FAMILY heterocyclic ring: heterocyclic rings USAGE EXAMPLESThe elements which go to form heterocyclic rings, in addition to carbon, are oxygen, sulphur, selenium and nitrogen. Various, Encyclopaedia Britannica, 11th Edit...(2010) n a ring of atoms of more than one kind; especially a ring of carbon atoms containing at least one atom that is not carbon Syn|Hyper heterocycle closed chain, ring (chemistry) a chain of atoms in a molecule that forms a closed loop |
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