ρ空气=0.00129g/cm^3
ρ水=1.0g/cm^3(4℃)
ρ氮气=0. 00018g/cm^3
ρ氨气=0. 00077g/cm^3
ρ氯气=0. 00321g/cm^3
ρ甲醇=0.7918 g/cm^3