| 例句 |
Dalton believed that the simplest compound of two elements must have one atom of each.道尔顿认为由两种化学元素组成的最简单化合物必须含有每种元素的一个原子。Callahan posits that chemical elements radiate electromagnetic signals.卡拉汉假定化学元素放射电磁信号。Ordinarily, spectral patterns were well understood fingerprints for identifying chemical elements in the stars.光谱图型通常是鉴别星球上化学元素特征的人所熟知的依据。 |