.TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourIsothermalCompressibility_pTxi .TILMedia.BaseClasses.PartialVLEFluidObjectFunctions.vapourIsothermalCompressibility_pTxipartial function vapourIsothermalCompressibility_pTxi = TILMedia.BaseClasses.PartialVLEFluidObjectFunctionPrototypes.vapourIsothermalCompressibility_pTxi;