http://en.wikipedia.org/wiki/Radiative_equilibrium Prevost's exchange principle radiative equilibrium 辐射平衡 la ley de Prevost http://en.wikipedia.org/wiki/Radiative_equilibrium la ley de Prevost Prevost's exchange principle лучистое равновесие Prevost's exchange principle equilibrium state Radiative Equilibrium Prevost's exchange principle http://en.wikipedia.org/wiki/Radiative_equilibrium radiative equilibrium radiative equilibrium Radiative Equilibrium Prevost's exchange principle Radiative equilibrium Prevost's exchange principle