.TILMedia.BaseClasses.PartialVLEFluidFunctions.vapourIsothermalCompressibility_dTxi .TILMedia.BaseClasses.PartialVLEFluidFunctions.vapourIsothermalCompressibility_dTxipartial function vapourIsothermalCompressibility_dTxi = TILMedia.BaseClasses.PartialVLEFluidFunctionPrototypes.vapourIsothermalCompressibility_dTxi;