横向
1
Gas form of a liquid
4
Smallest unit of an element
6
Reddish electrical conductor
7
Gas essential for breathing
纵向
2
Fourth state of matter
3
Unit of electric potential
5
Naturally occurring inorganic solid
8
Compound containing oxygen
Gas form of a liquid
Smallest unit of an element
Reddish electrical conductor
Gas essential for breathing
Fourth state of matter
Unit of electric potential
Naturally occurring inorganic solid
Compound containing oxygen