| 词汇 | heterocyclic ring |
| 类别 | 英汉双解翻译词典 |
| 释义 | heterocyclic ring 释义 杂环：一种由不同元素（如碳、氮、硫等）组成的环状化合物。 例句 1·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。 2·Structute of nitrogen heterocyclic ring quaternary ammonium salt cationic surfactants was identi fied by mass spectrography, nuclear magnetic resonance spectra, infrared spectra and etc. 用质谱法、核磁共振波谱法、红外光谱法等，确定了未知氮杂环季铵盐型阳离子表面活性剂的结构。 3·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。 同义词 杂环 heterocycle |
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