| 变量 | 稳健性检验1 | 稳健性检验2 |
| lnYust | 0.031*** | 0.027** |
|
| (3.00) | (2.22) |
| L.lntariff |
| −605.037** |
|
|
| (−2.25) |
| lntariff | −97.232*** |
|
|
| (−3.86) |
|
| lnYct | 0.011*** | 0.011** |
|
| (2.93) | (2.52) |
| lnExt | −151.59** | −160.186** |
|
| (−2.61) | (−2.24) |
| lnPct | −502.815 | −190.329 |
|
| (−0.99) | (−0.32) |
| Constant | 5288.349 | 1502.805 |
|
| (1.00) | (0.25) |
| Observations | 30 | 30 |