横向
1
Positive particle in nucleus
3
Our home planet
4
Amplified beam of light
5
Fourth state of matter
纵向
1
Tectonic landmass section
2
Icy body with a tail near the sun
6
Unit of electric potential
7
Measure of matter in an object
Positive particle in nucleus
Our home planet
Amplified beam of light
Fourth state of matter
Tectonic landmass section
Icy body with a tail near the sun
Unit of electric potential
Measure of matter in an object