elementary substance是什么意思 elementary substance怎么读
elementary substance的相关资料
elementary substance的用法和样例
- Oxygen is one of the basic elements of substance.
氧是物质的基本元素之一。 - An element is one kind of substance, and its nature can not be changed by any general decomposition method.
一个元素是一种物质，它的性质不能由任何普通的分解方法而改变。
展开更多
