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试验风洞 : 64 phrases in 12 subjects |
| Air defense | 1 |
| Architecture | 1 |
| Automobiles | 2 |
| Aviation | 5 |
| Bridge construction | 1 |
| Earth sciences | 4 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Space | 8 |
| Technology | 5 |
| United States | 1 |
| Wind Energy | 34 |
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