| 因变量 | lnec | |
| 列 | (1) | (2) | 
| lnscale | 0.515*** | 0.838*** | 
| (0.002) | (0.000) | |
| structure | 1.055** | 0.186 | 
| (0.045) | (0.718) | |
| energy_stru | 1.088 | 0.511 | 
| (0.237) | (0.515) | |
| energy_cons | 0.050*** | 0.172*** | 
| (0.004) | (0.002) | |
| lntech | 0.126 | −0.078 | 
| (0.177) | (0.395) | |
| lnprice | −0.122 | −0.008 | 
| (0.176) | (0.943) | |
| open | 0.555 | −0.565 | 
| (0.429) | (0.378) | |
| growth | 1.630*** | 0.825 | 
| (0.001) | (0.158) | |
| 常数项 | 3.573*** | 3.003*** | 
| (0.001) | (0.005) | |
| AR(1) | 
 | 0.690*** | 
| 
 | (0.000) | |
| 
 | 0.997 | 0.998 | 
| DW | 1.447 | 1.693 | 
| N | 5.923 (0.656) | 7.741 (0.459) | 
| N | 24 | 24 |