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heterocyclic+ring

双语例句

  • It is a heterocyclic compound, containing a pyridine ring; its chemical formula is C10H14N. Nicotine is the chief addictive ingredient (see drug addiction) in cigarettes and cigars and in snuff.

    尼古丁杂环化合物,化学式为C10H14N纸烟雪茄鼻烟中的主要上瘾成分

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  • Triazine is a type of heterocyclic organic compounds, it is important to ring nitrogen organic chemical raw materials.

    一种三嗪类含氮有机化合物重要杂环有机化工原料

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  • Purine: Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms.

    嘌呤:嘌呤是原子组成双环结构杂环化合物的统称。

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