横向
1
Push or pull on an object
4
Path of a planet around the sun
6
Unit of force
7
Ball of burning gas in space
纵向
2
Group of similar cells
3
The Red Planet
5
Reddish electrical conductor
8
Disturbance that transfers energy
Push or pull on an object
Path of a planet around the sun
Unit of force
Ball of burning gas in space
Group of similar cells
The Red Planet
Reddish electrical conductor
Disturbance that transfers energy