横向
1
Particle of light
4
Infectious microscopic agent
5
Naturally occurring inorganic solid
6
Biological catalyst
纵向
2
Chemical element in table salt
3
Mass per unit volume
7
Fourth state of matter
8
Smallest unit of an element
9
Unit of force
Particle of light
Infectious microscopic agent
Naturally occurring inorganic solid
Biological catalyst
Chemical element in table salt
Mass per unit volume
Fourth state of matter
Smallest unit of an element
Unit of force