横向
1
Mass per unit volume
5
Chemical element in table salt
7
Nerve cell in the brain
9
Absolute temperature scale unit
11
Unit of heredity
纵向
2
Infectious microscopic agent
3
Path of a planet around the sun
4
Blocking of light by a celestial body
6
Precious yellow metallic element
8
Biological catalyst
10
Hottest planet in solar system