| 单词 | heterocyclic ring |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔azole〕A class of organic compounds having a five-membered heterocyclic ring with two double bonds.氮杂茂：一种由五种杂环元素，两组粘合剂组成的有机化合物美国传统〔chelate〕A chemical compound in the form of a heterocyclic ring, containing a metal ion attached by coordinate bonds to at least two nonmetal ions.螯合物：杂环化学复合物，由一个金属离子与两个或两个以上非金属离子构成配位键美国传统 |
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