C4F8 and N2\HEAT_TRANSFER_CHA_GAS_MIXTURE_C4F8_01MPa.m ...........\HEAT_TRANSFER_CHA_GAS_MIXTURE_C4F8_025MPa.m ...........\HEAT_TRANSFER_CHA_GAS_MIXTURE_N2_01MPa.m ...........\HEAT_TRANSFER_CHA_GAS_MIXTURE_N2_025MPa.m C4F8 and N2