横向
1
Unit of force
5
Natural satellite of Earth
6
Our home planet
8
Unit of electric potential
纵向
2
Push or pull on an object
3
Smallest unit of an element
4
Mass per unit volume
7
Amplified beam of light
Unit of force
Natural satellite of Earth
Our home planet
Unit of electric potential
Push or pull on an object
Smallest unit of an element
Mass per unit volume
Amplified beam of light