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试验设施 : 61 phrases in 12 subjects |
| Agriculture | 1 |
| Air defense | 1 |
| Automobiles | 1 |
| Aviation | 23 |
| Electronics | 11 |
| Mechanics | 1 |
| Mining | 1 |
| Nautical | 1 |
| Navigation | 1 |
| Space | 14 |
| Technology | 2 |
| United States | 4 |
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