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膨胀头 : 31 phrases in 10 subjects |
| Agriculture | 1 |
| Architecture | 1 |
| Engineering geology | 1 |
| Metallurgy | 1 |
| Nautical | 3 |
| Refrigeration | 1 |
| Shipbuilding | 1 |
| Space | 1 |
| Steel production | 1 |
| Technology | 20 |
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