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流类型 : 25 phrases in 12 subjects |
| Bridge construction | 2 |
| Desert science | 1 |
| Earth sciences | 2 |
| Electronics | 1 |
| Engineering geology | 1 |
| Hydroelectric power stations | 1 |
| Mining | 1 |
| Oil / petroleum | 1 |
| Pharmacology | 2 |
| Shipbuilding | 1 |
| Space | 1 |
| Technology | 11 |
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