横向
1
Our home planet
4
Chemical element in table salt
6
Preserved remains of ancient life
纵向
2
Magnetic metallic element
3
Unit of energy
5
Second lightest element
7
Mass per unit volume
8
Smallest unit of an element
Our home planet
Chemical element in table salt
Preserved remains of ancient life
Magnetic metallic element
Unit of energy
Second lightest element
Mass per unit volume
Smallest unit of an element