横向
1
Basic unit of life
3
Particle of light
4
Gas form of a liquid
5
Mass per unit volume
6
Substance with pH below 7
纵向
2
Unit of energy
3
Fourth state of matter
7
Positive particle in nucleus
Basic unit of life
Particle of light
Gas form of a liquid
Mass per unit volume
Substance with pH below 7
Unit of energy
Fourth state of matter
Positive particle in nucleus