heterocyclic ring

常见例句

The attachment of a group to a central metallic agent such as iron with two valences to form a heterocyclic ring.
一种基与中心金属离子（如二价铁离子）结合，形成杂环。
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An organic coordination (complexing ) compound in which the metal ion is bound to atoms of nonmetals, e. g. nitrogen, carbon, or oxygen, to form a heterocyclic ring having coordinate covalent bonds.
一种配位（络合）化合物，其中的金属离子与氮、碳或氧等非金属原子结合生成有配位共价键的杂环。
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The results show that the pyridine heterocyclic ring comes into splitting decomposition at 770 ℃;
结果表明：吡啶杂环在770℃时开始裂解；