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| 垂直中心 | |||
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vertical center : 28 phrases in 12 subjects |
| Automobiles | 1 |
| Earth sciences | 2 |
| Hydroelectric power stations | 1 |
| Nautical | 3 |
| Navigation | 3 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Shipbuilding | 4 |
| Space | 1 |
| Technology | 8 |
| Textile industry | 1 |
| Wind Energy | 2 |
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