  The temperature scales of screening of local magnetic and orbital moments are
important characteristics of strongly correlated substances. In a recent paper
X. Deng et al. using dynamic mean-field theory (DMFT) have identified
temperature scales of the onset of screening in orbital and spin channels in
some correlated metals from the deviation of temperature dependence of local
susceptibility from the Curie law. We argue that the scales obtained this way
are in fact much larger, than the corresponding Kondo temperatures, and,
therefore, do not characterize the screening process. By reanalyzing the
results of this paper we find the characteristic (Kondo) temperatures for
screening in the spin channel $T_K\approx 100$ K for V$_2$O$_3$ and $T_K\approx
350$ K for Sr$_2$RuO$_4$, which are almost an order of magnitude smaller than
those for the onset of the screening estimated in the paper ($1000$ K and
$2300$ K, respectively); for V$_2$O$_3$ the obtained temperature scale $T_K$ is
therefore comparable to the temperature of completion of the screening, $T^{\rm
comp}\sim 25$ K, which shows that the screening in this material can be
described in terms of a single temperature scale.
