横向
1
Reddish electrical conductor
2
Smallest unit of an element
5
Center of an atom or cell
纵向
1
Icy body with a tail near the sun
2
Substance with pH below 7
3
Unit of heredity
4
Particle of light
6
Amplified beam of light
7
Second lightest element
Reddish electrical conductor
Smallest unit of an element
Center of an atom or cell
Icy body with a tail near the sun
Substance with pH below 7
Unit of heredity
Particle of light
Amplified beam of light
Second lightest element