.TILMedia.BaseClasses.PartialVLEFluidFunctions.isothermalCompressibility_phxi .TILMedia.BaseClasses.PartialVLEFluidFunctions.isothermalCompressibility_phxipartial function isothermalCompressibility_phxi = TILMedia.BaseClasses.PartialVLEFluidFunctionPrototypes.isothermalCompressibility_phxi;