横向
1
Force that attracts objects together
4
Unit of force
6
The Red Planet
8
Naturally occurring inorganic solid
纵向
2
Nerve cell in the brain
3
Positive particle in nucleus
5
Basic unit of life
7
Form of thermal energy
9
Smallest unit of an element
Force that attracts objects together
Unit of force
The Red Planet
Naturally occurring inorganic solid
Nerve cell in the brain
Positive particle in nucleus
Basic unit of life
Form of thermal energy
Smallest unit of an element