横向
1
Unit of force
3
Gas form of a liquid
4
Force that attracts objects together
5
Hottest planet in solar system
6
Molten rock beneath Earth surface
9
Unit of power
纵向
1
Nerve cell in the brain
2
Chemical element in table salt
3
Unit of electric potential
4
Unit of heredity
7
Mass per unit volume
8
Gas essential for breathing