横向
1
Natural satellite of Earth
3
Icy body with a tail near the sun
6
Center of an atom or cell
7
Disturbance that transfers energy
8
Form of thermal energy
纵向
2
Unit of electric potential
4
Unit of force
5
Path of a planet around the sun
9
Curved glass that refracts light
10
Infectious microscopic agent
11
Push or pull on an object
12
Naturally occurring inorganic solid