Nuclear shadowing in a parton recombination model:Q2variation

${\mathit{Q}}^2$ variation of the nuclear-structure-function ratio ${\mathit{F}}_2^{\mathit{A}}$(x,${\mathit{Q}}^2$)/${\mathit{F}}_2^{\mathit{D}}$(x,${\mathit{Q}}^2$) is investigated in a parton model with ${\mathit{Q}}^2$-rescaling and parton-recombination effects. Calculated results are compared with the New Muon Collaboration (NMC) and the Fermilab-E665 experimental data. We find that our theoretical results show small ${\mathit{Q}}^2$ variations and that they are consistent with the data within present experimental accuracy.