Original language | Chinese (Simplified) |
---|---|
Journal | 科学学研究 |
Volume | 31 |
Issue number | 7 |
Publication status | Published - 2013 |
Externally published | Yes |
基于专利的美国技术领域分布结构演变
Fengchao Liu, Yao Fu, Yutao Sun
Research output: Contribution to journal › Article › peer-review