differences in various regions meaning in English

区域差别

This paper is organized with 11 chapters as follows : chapter 1 , the paper draws its research subject - the development process and mathematic simulation of shanghai urban pension scheme , from the basic fact that the pension schemes have been reformed by local governments and have extremely differences in various regions in china . then , the study method and thesis framework and primary innovative assertions of this paper are discussed
本文共分十一章：第一章，从养老保险制度在中国的地区改革主导和地区间制度的差异性，引出全文的研究对象? ?上海城镇养老保险制度的变迁和数值模拟，并界定了本文的研究方法、论文构架，归纳了主要的创新观点。