Research Article
Research on the Relationship between Beijing-Tianjin-Hebei Airport Group and Regional Coordinated Development
| Coordination degree SD | ≤0.49 | 0.5∼0.59 | 0.6∼0.69 | 0.7∼0.79 | ≥0.8 |
| Rank | Not synergetic | Barely synergetic | Medium synergetic | Good synergetic | High-quality synergetic |
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