横向
1
Unit of electric potential
2
Form of thermal energy
3
Icy body with a tail near the sun
4
Compound containing oxygen
纵向
2
Second lightest element
3
Reddish electrical conductor
5
Ball of burning gas in space
6
Positive particle in nucleus
Unit of electric potential
Form of thermal energy
Icy body with a tail near the sun
Compound containing oxygen
Second lightest element
Reddish electrical conductor
Ball of burning gas in space
Positive particle in nucleus