烟酸和烟酰胺是一种白色结晶体，都是很容易从小肠吸收的。

A white crystalline substance that is soluble in water and alcohol, niacin and niacinamide are both readily absorbed from the small intestine.

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维生素b3有两种基体形式——烟酸(又称烟酸)和烟酰胺(也称为烟酰胺)。

Vitamin B3 comes in two basic forms - niacin (also called nicotinic acid) and niacinamide (also called nicotinamide).

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研究了室温条件下结构相似的烟酸和烟酰胺以及烟碱的太赫兹光谱。

The terahertz (THz) spectra of nicotinic acid, nicotinamide and nicotine were studied at room temperature. The time-domain THz spectra were measured.

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