HADRON SPECTRUM AND MATRIX-ELEMENTS IN QCD WITH DYNAMICAL WILSON FERMIONS AT 6 G(2)=5.3/

We present results of a lattice simulation of quantum chromodynamics w ith two degenerate flavors of dynamic Wilson fermions at 6/g2= 5.3 at each of two dynamical fermion hopping parameters kappa = 0.1670 and 0. 1675 corresponding to pion masses in lattice units of about 0.45 and 0 .31. The simulations include three other values of valence quark mass, in addition to the dynamical quarks. We present calculations of masse s and of the decay constants of vector mesons and of pseudoscalars, in cluding the D-meson decay constant. The effects of sea quarks on matri x elements and spectroscopy are small.