横向
1
Unit of power
3
Force that attracts objects together
7
Form of thermal energy
8
Disturbance that transfers energy
纵向
2
Path of a planet around the sun
4
Unit of force
5
Group of similar cells
6
Mass per unit volume
9
Gas essential for breathing
Unit of power
Force that attracts objects together
Form of thermal energy
Disturbance that transfers energy
Path of a planet around the sun
Unit of force
Group of similar cells
Mass per unit volume
Gas essential for breathing