横向
1
Unit of energy
4
Positive particle in nucleus
5
Unit of heredity
8
Preserved remains of ancient life
9
Chemical element in table salt
11
Mass per unit volume
纵向
2
Naturally occurring inorganic solid
3
Magnetic metallic element
4
Tectonic landmass section
6
Blocking of light by a celestial body
7
Particle of light
8
Push or pull on an object
10
Unit of force
12
Hottest planet in solar system