SF6-He\HEAT_TRANSFER_CHA_GAS_MIXTURE_SF6_He_20_80_01MPa.m ......\HEAT_TRANSFER_CHA_GAS_MIXTURE_SF6_He_20_80_025MPa.m ......\HEAT_TRANSFER_CHA_GAS_MIXTURE_SF6_He_50_50_01MPa.m ......\HEAT_TRANSFER_CHA_GAS_MIXTURE_SF6_He_50_50_025MPa.m SF6-He