横向
1
Unit of electric potential
3
Glass that splits light into spectrum
4
Absolute temperature scale unit
5
Ball of burning gas in space
6
Hottest planet in solar system
8
Curved glass that refracts light
纵向
2
Compound containing oxygen
3
Tectonic landmass section
5
Chemical element in table salt
7
Center of an atom or cell
9
Group of similar cells