横向
1
Compound containing oxygen
4
Amplified beam of light
5
Mass per unit volume
6
Natural satellite of Earth
10
Our home planet
11
Unit of electric potential
12
Measure of matter in an object
13
The Red Planet
14
Tectonic landmass section
纵向
2
Nerve cell in the brain
3
Unit of force
7
Infectious microscopic agent
8
Solid with repeating atomic pattern
9
Path of a planet around the sun
15
Unit of energy