Preferred Label : power level; 
IUPAC definition : Logarithm of the ratio of a power to a reference power. Levels are expressed in different
               ways: LP   (1/2).ln(P/P0).Np, where Np is the symbol for the unit neper coherent with
               the SI, or LP   10.log10(P/P0).dB, where dB is the symbol for the unit decibel.; 
         
         
            Origin ID : P04793; 
 Automatic exact mappings (from CISMeF team) Automatic exact mappings (from CISMeF team)
 See also See also
 
         
         
         Logarithm of the ratio of a power to a reference power. Levels are expressed in different
            ways: LP   (1/2).ln(P/P0).Np, where Np is the symbol for the unit neper coherent with
            the SI, or LP   10.log10(P/P0).dB, where dB is the symbol for the unit decibel.