helmholtzToProps_pTCalculate property record for pressure and temperature as states from dimensionless Helmholtz function  | 
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| f | 
         Type: HelmholtzDerivs Description: Dimensionless derivatives of Helmholtz function  | 
    
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| pro | 
         Type: ThermoProperties_pT Description: Property record for pressure and temperature as dynamic states  | 
    
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