横向
1
Substance with pH below 7
3
Unit of force
4
Nerve cell in the brain
7
Tissue that contracts for movement
9
Mass per unit volume
纵向
2
Compound containing oxygen
5
Gas essential for breathing
6
Push or pull on an object
8
Fourth state of matter
Substance with pH below 7
Unit of force
Nerve cell in the brain
Tissue that contracts for movement
Mass per unit volume
Compound containing oxygen
Gas essential for breathing
Push or pull on an object
Fourth state of matter