CO:free energy TOTEN =A1 eV
energy without entropy=A2 energy(sigma->0) =A3
金属表面:free energy TOTEN = B1 eV
energy without entropy= B2 energy(sigma->0) =B3
金属表面+CO整体:free energy TOTEN = C1 eV
energy without entropy=C2 energy(sigma->0) =C3
计算CO吸附在金属表面的吸附能,请问应该采用哪几个数相减?