横向
1
Path of a planet around the sun
3
Curved glass that refracts light
4
Second lightest element
7
Measure of matter in an object
8
Push or pull on an object
9
Element found in all living things
11
Basic unit of life
纵向
2
Infectious microscopic agent
4
Form of thermal energy
5
Absolute temperature scale unit
6
Center of an atom or cell
10
Positive particle in nucleus