.TILMedia.BaseClasses.PartialVLEFluidFunctions.steamMassFraction_dTxi .TILMedia.BaseClasses.PartialVLEFluidFunctions.steamMassFraction_dTxipartial function steamMassFraction_dTxi = TILMedia.BaseClasses.PartialVLEFluidFunctionPrototypes.steamMassFraction_dTxi;