#figure(
  image("/画图/弱极性不同方向偏移/embed.svg"),
  caption: [
    Frequency shifts of negligible-polar phonon modes under different incidence configurations.
    (a) Experimental results under z(yy)#overline[z] and x(yy)#overline[x] configurations. Solid lines and dots represent distribution and value of experimental data, respectively.
    (b) Comparison between experimental and calculated frequency shifts. The baby blue bars and error bars represent the mean and standard deviation of experimental results, respectively; the purple bars represent theoretical calculations.
  ],
  placement: none
)<fig-nopo-diff>