横向
1
Form of thermal energy
4
Second lightest element
5
Compound containing oxygen
纵向
2
Unit of heredity
3
Icy body with a tail near the sun
6
Unit of energy
7
Mass per unit volume
8
Naturally occurring inorganic solid
Form of thermal energy
Second lightest element
Compound containing oxygen
Unit of heredity
Icy body with a tail near the sun
Unit of energy
Mass per unit volume
Naturally occurring inorganic solid