  In this study, the transverse momentum spectra of $k ^{\pm }$, $\pi ^{\pm }$
and $p(\bar{p})$ particles in mid-rapidity ($\left | y \right | < 0.1$) for
nine centrality classes are investigated in $^{238} U$+$^{238} U$ collisions at
$\sqrt{s_{NN}}$=193 GeV within the cascade and soft momentum-dependent equation
of state (SM-EoS) mode of the UrQMD model. Other extracted observable from
$p_{T}$ spectrum includes average transverse momentum ($\left \langle p_{T}
\right \rangle$), the yield ($dN/dy$) as well as the ratio of particle type are
also shown in function of collision centrality. It is found that the U+U
collision process is segmented. Before the collision centrality is $50-60\%$,
the experimental data are described well using cascade mode when the $p_{T} <
1.2 GeV/c$. The results are in good agreement with the experimental data using
the SM-EoS mode at $p_{T} > 1.2 GeV/c$. For the case of $60-80\%$ centrality,
the SM-EoS mode describes the data better. At RHIC energy, pair production is
the dominant production mechanism for particles, with the anti-ion to ion yield
ratio suggesting.
