横向
1
Disturbance that transfers energy
4
Unit of electric potential
5
Unit of force
6
Force that attracts objects together
纵向
2
Form of thermal energy
3
Gas essential for breathing
7
Positive particle in nucleus
8
Naturally occurring inorganic solid
Disturbance that transfers energy
Unit of electric potential
Unit of force
Force that attracts objects together
Form of thermal energy
Gas essential for breathing
Positive particle in nucleus
Naturally occurring inorganic solid