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| 中心间位置 | |||
| 中心位置 | |||
| center position: 16 phrases in 7 subjects |
| Air defense | 1 |
| Automobiles | 5 |
| Aviation | 1 |
| Nautical | 1 |
| Navigation | 2 |
| Space | 3 |
| Technology | 3 |
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