横向
1
Fourth state of matter
5
Form of thermal energy
6
Compound containing oxygen
9
Mass per unit volume
纵向
2
Smallest unit of an element
3
Curved glass that refracts light
4
Tissue that contracts for movement
7
Gas form of a liquid
8
Unit of energy
Fourth state of matter
Form of thermal energy
Compound containing oxygen
Mass per unit volume
Smallest unit of an element
Curved glass that refracts light
Tissue that contracts for movement
Gas form of a liquid
Unit of energy