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| regional balance | |||
| zone equilibrium | |||
| 区域平衡: 11 phrases in 7 subjects |
| Aviation | 1 |
| Earth sciences | 1 |
| Economy | 2 |
| Hydroelectric power stations | 2 |
| International trade | 1 |
| Metallurgy | 2 |
| Technology | 2 |
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