横向
1
Compound containing oxygen
3
Positive particle in nucleus
6
Our home planet
8
Amplified beam of light
纵向
2
Unit of electric potential
4
Force that attracts objects together
5
Naturally occurring inorganic solid
7
Unit of energy
Compound containing oxygen
Positive particle in nucleus
Our home planet
Amplified beam of light
Unit of electric potential
Force that attracts objects together
Naturally occurring inorganic solid
Unit of energy