横向
1
Unit of electric potential
4
Natural satellite of Earth
5
Basic unit of life
6
Our home planet
9
Center of an atom or cell
纵向
2
Push or pull on an object
3
Mass per unit volume
7
Biological catalyst
8
Unit of force
Unit of electric potential
Natural satellite of Earth
Basic unit of life
Our home planet
Center of an atom or cell
Push or pull on an object
Mass per unit volume
Biological catalyst
Unit of force