横向
1
Unit of power
3
Center of an atom or cell
4
Naturally occurring inorganic solid
8
Path of a planet around the sun
11
Mass per unit volume
纵向
2
Icy body with a tail near the sun
5
Amplified beam of light
6
Substance with pH below 7
7
Disturbance that transfers energy
9
Hottest planet in solar system
10
Absolute temperature scale unit