横向
1
Infectious microscopic agent
2
Icy body with a tail near the sun
4
Smallest unit of an element
6
Mass per unit volume
8
Solid with repeating atomic pattern
纵向
2
Element found in all living things
3
Chemical element in table salt
5
Absolute temperature scale unit
7
Path of a planet around the sun
8
Basic unit of life
9
Unit of electric potential
10
Preserved remains of ancient life