横向
1
Substance with pH below 7
3
Substance with pH above 7
4
Natural satellite of Earth
6
Tectonic landmass section
纵向
1
Smallest unit of an element
2
Second lightest element
5
Mass per unit volume
6
Particle of light
Substance with pH below 7
Substance with pH above 7
Natural satellite of Earth
Tectonic landmass section
Smallest unit of an element
Second lightest element
Mass per unit volume
Particle of light