横向
1
Unit of electric potential
4
Center of an atom or cell
6
Icy body with a tail near the sun
7
Magnetic metallic element
8
Gas form of a liquid
纵向
2
Force that attracts objects together
3
Mass per unit volume
5
Preserved remains of ancient life
Unit of electric potential
Center of an atom or cell
Icy body with a tail near the sun
Magnetic metallic element
Gas form of a liquid
Force that attracts objects together
Mass per unit volume
Preserved remains of ancient life