8 Hausmann, R. & Klinger, B.(2007), The Structure of the Product Space and the Evolution of Comparative Advantage. CID Working Papers 146, Center for International Development at Harvard University. 9 详见《中国制造业占比见顶回落的谜题与出路(中篇):发达国家制造业占比见顶回落后的产业升级》