BWRS方程的应用范围较大，在对比温度低至Tr=0.3，对比密度ρr=3.0时仍可用于计算气体的pVT性质。用于推算轻烃气体和CO2.H2S、N2等气体的容积，误差范围在0.5%~2.0%之间。BWRS equation can be widely used to calculate the pVT property of gas when the contrast temperature is low to Tr=0.3 and rho =3.0. Used to calculate the volume of light hydrocarbon gas and CO2.H2S, N2 and other gases, the error range is between 0.5% and 2.0%.