横向
1
Disturbance that transfers energy
3
Smallest unit of an element
6
Mass per unit volume
纵向
2
Our home planet
4
Natural satellite of Earth
5
Substance with pH above 7
7
Blocking of light by a celestial body
8
Gas essential for breathing
Disturbance that transfers energy
Smallest unit of an element
Mass per unit volume
Our home planet
Natural satellite of Earth
Substance with pH above 7
Blocking of light by a celestial body
Gas essential for breathing