Frantzen.D.The Causality between R&D and Productivity in Manufacturing:An International Disaggregate Panel Data Study[J].International Review of Applied Economics,2003,17(2).

 
  • 2004年;电子及通信设备制造业研发投资占高技术产业研发投资比重为64.;54%25;电子计算机及办公设备制造业比重为13
今日热词
目录 附录 查词历史