| 释义 |
DEFINITIVE EXAMPLES 权威例句〔empirical formula〕A chemical formula that indicates the relative proportions of the elements in a molecule rather than the actual number of atoms of the elements.成分式:表示在一个分子中各元素的相对比例而非元素的实际原子数的化学式美国传统〔proportion〕You can vary the relative proportions of things in a picture very simply.你能很简单地改变一幅画中事物的相对比例。柯林斯高阶 |