横向
1
Second lightest element
3
Basic unit of life
5
Mass per unit volume
7
Nerve cell in the brain
纵向
2
Tectonic landmass section
4
Measure of matter in an object
6
Positive particle in nucleus
8
Unit of electric potential
Second lightest element
Basic unit of life
Mass per unit volume
Nerve cell in the brain
Tectonic landmass section
Measure of matter in an object
Positive particle in nucleus
Unit of electric potential