横向
1
Mass per unit volume
3
Tissue that contracts for movement
4
Second lightest element
10
Absolute temperature scale unit
纵向
2
Hottest planet in solar system
3
The Red Planet
5
Smallest unit of an element
6
Infectious microscopic agent
7
Disturbance that transfers energy
8
Tectonic landmass section
9
Amplified beam of light