"Figure 34 to for PbPb" of "Measurements of $\pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ spectra in $^{40}$Ar+$^{45}$Sc collisions at 13$A$ to 150$A$ GeV/$c$"

The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for PbPb. The data used for comparison, other than Ar+Sc, are published in references [2-4,13,17,53-64]铅铅（PbPb）碰撞中⟨K⁺⟩/⟨π⁺⟩平均多重数比值的能量依赖性。除氩钪（Ar+Sc）碰撞数据外，其余用于对比的实验数据均发表于参考文献[2-4,13,17,53-64]