We probe the universality of acceleration scale in Milgrom's modified Newtonian dynamics (MOND) using the recently released rotation curve data from SPARC galaxies. We divide the SPARC data into different subsamples according to the morphological types of galaxies, and fit the rotation curve data of each subsample with the theoretical prediction of MOND. MOND involves an arbitrary interpolation function which connects the Newtonian region and the MOND region. Here we consider five different interpolation functions that are widely discussed in the literature. It is shown that the best-fitting significantly depends on the interpolation functions. For a specific interpolation function, also depends on the morphological types of galaxies, implying that may be not a universal constant. Introducing a dipole correction to can significantly improve the fits. The dipole directions for four of the five interpolation functions point towards an approximately consistent direction, but still varies for different interpolation functions.

我们使用最近发布的来自 SPARC 星系的旋转曲线数据，探讨了 Milgrom 修正牛顿动力学 (MOND)中加速度尺度的普遍性。我们根据星系的形态类型将SPARC数据划分为不同的子样本，并将每个子样本的自转曲线数据与MOND的理论预测进行拟合。MOND 涉及连接牛顿区域和 MOND 区域的任意插值函数。在这里，我们考虑在文献中广泛讨论的五种不同的插值函数。结果表明，最佳拟合显着取决于插值函数。对于特定的插值函数，还取决于星系的形态类型，这意味着可能不是一个普遍的常数。引入偶极子校正可以显着改善拟合。五个插值函数中的四个的偶极子方向指向大致一致的方向，但对于不同的插值函数仍会有所不同。