(1)The life time of the quark phase increases with increasing the initial quark chemical potential; (2)The diiepton, strangeness and photon production are heightened with increasing the quark chemical potential; (3) The diiepton, strangeness and photon production sensitively depend on the initial conditions of the QGP system; (4) The results of the thermodynamic equilibrium QGP system are obviously different from the chemically equilibrating system.
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