| 模型(7) | 模型(8) | 模型(9) | Relatedness | 64.28*** | 66.70*** | 65.31*** | | (2.624) | (2.972) | (2.930) | SIZE | 0.139*** | 0.151*** | 0.142*** | | (0.0449) | (0.0470) | (0.0468) | FDI | -4.100* | -3.822* | -4.032* | | (2.235) | (2.258) | (2.255) | COMP | 0.633*** | 0.568*** | 0.633*** | | (0.166) | (0.169) | (0.168) | PGDP | -6.22*** | -5.58*** | -6.34*** | | (2.01) | (2.04) | (2.03) | URBAN | -0.455 | -0.485 | -0.506 | | (0.653) | (0.657) | (0.657) | MARK | 11.35*** | 11.36*** | 11.32*** | | (0.987) | (0.997) | (0.997) | TRAN | 3.901*** | 3.957*** | 3.971*** | | (0.718) | (0.723) | (0.723) | Relatedness*SIZE | | 8.936** | | | | (4.526) | | Relatedness*FDI | | -3.403 | | | | (3.931) | | Relatedness*COMP | | 12.73** | | | | (4.288) | | Relatedness*PGDP | | | -5.806 | | | | (3.191) | Relatedness*URBAN | | | -2.007 | | | | (5.717) | Relatedness*MARK | | | 23.19** | | | | (9.916) | Relatedness*TRAN | | | 16.84** | | | | (7.381) | Constant | -68.51*** | -67.76*** | -69.35*** | | (2.723) | (2.620) | (2.514) | R2 | 0.0728 | 0.0671 | 0.0609 | Observations | 255301 | 255301 | 255301 |
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