Generally, among the terrestrial planets the Earth and Venus characterized by the haviest mass, highest escape velocity, tied up much more gases which are more complicated in components and higher in density.

• 在类地行星中 ,地球和金星质量最大 ,逃逸速度最大 ,可将更多的气体“束缚”在它们表面 ,因此它们的大气有着复杂的组成和较大的密度。