中图分类号：F127 文献标识码：A DOI：10.13411/j. cnki. sxsx.2025.04.019

Abstract：Thisarticletakescountydatafrom1OcitiesinShaanxiProvincefrom2O13to2O22asasample.Byintegratingdualindicators of“hard”an（试读）...