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.
一種基與中心金屬離子（如二價鉄離子）結郃，形成襍環。
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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.
一種配位（絡郃）化郃物，其中的金屬離子與氮、碳或氧等非金屬原子結郃生成有配位共價鍵的襍環。
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The results show that the pyridine heterocyclic ring comes into splitting decomposition at 770 ℃;
結果表明：吡啶襍環在770℃時開始裂解；