WOLFRAM SYSTEM MODELER
    T3b_psRegion 3 b: inverse function T(p,s)  | 
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SystemModel["Modelica.Media.Water.IF97_Utilities.BaseIF97.Basic.T3b_ps"]

This information is part of the Modelica Standard Library maintained by the Modelica Association.
Equation number 7 from:
| p | 
         Type: Pressure (Pa) Description: Pressure  | 
    
|---|---|
| s | 
         Type: SpecificEntropy (J/(kg⋅K)) Description: Specific entropy  | 
    
| T | 
         Type: Temperature (K) Description: Temperature  | 
    
|---|