1978年以来,北京市中小企业对支持其经济良好快速发展、增加就业和财政收入、推进科技创新和新农村建设起到了重要作用,同时北京市经济得到了迅速发展,产业结构调整步逐步加快,产业布局和产业结构得到调整和优化,学者们对产业结构调整、中小企业的发展作了诸多研究。 Since 1978, the SMEs in Beijing have played an important role in supporting their sound and rapid economic growth, increasing employment and fiscal revenue, promoting scientific and technological innovation and building a new socialist countryside. At the same time, the economy of Beijing has been rapidly developed and its pace of industrial restructuring has been gradually accelerated. The industrial layout and industrial structure have been adjusted and optimized. Scholars have done a lot of researches on the adjustment of industrial structure and the development of small and medium-sized enterprises.