横向
1
Mass per unit volume
5
The Red Planet
6
Naturally occurring inorganic solid
纵向
2
Unit of power
3
Push or pull on an object
4
Amplified beam of light
5
Molten rock beneath Earth surface
7
Group of similar cells
Mass per unit volume
The Red Planet
Naturally occurring inorganic solid
Unit of power
Push or pull on an object
Amplified beam of light
Molten rock beneath Earth surface
Group of similar cells