技术异质性下中国三大城市群工业用地利用效率评价 |
韩海彬, 牛可萌 |
Evaluation of industrial land use efficiency of China’s three major urban agglomerations under technology heterogeneity |
HAN Haibin, NIU Kemeng |
图1 群组前沿、共同前沿与技术差距比的图形描述 |
Figure 1 A diagram of group-frontier, meta-frontier, and technical gap ration |
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