zuì jiǎn shì / zhǐ néng / biǎo shì / huà hé wù / zhōng / yuán sù / de / yuán zǐ / gè shù / bǐ

最简式只能表示化合物中元素的原子个数比。

The empirical formula can only represent the ratio of the numbers of atoms of elements in a compound.