law of multiple proportions

详细解释:【计】 倍比定律
【化】 倍比定律
【医】 倍比[定]律

英语解释：

名词 law of multiple proportions:

(chemistry) law stating that when two elements can combine to form more than one compound the amounts of one of them that combines with a fixed amount of the other will exhibit a simple multiple relation同义词：Dalton's law