横向
1
Substance with pH above 7
3
Group of similar cells
4
Positive particle in nucleus
纵向
2
Mass per unit volume
5
Magnetic metallic element
6
Path of a planet around the sun
7
Unit of force
8
Curved glass that refracts light
Substance with pH above 7
Group of similar cells
Positive particle in nucleus
Mass per unit volume
Magnetic metallic element
Path of a planet around the sun
Unit of force
Curved glass that refracts light