The atom is a basic unit of matter consisting of a dense, central nucleus surrounded by a cloud of negatively charged electrons.
原子是物质的基本单位组成了一个密集，中央核周围有云带负电荷的电子。
The atom is a basic unit of matter consisting of a dense, central nucleus surrounded by a cloud of negatively charged electrons.
原子是物质的基本单位组成了一个密集，中央核周围有云带负电荷的电子。
应用推荐