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相 模式 : 27 phrases in 11 subjects |
| Air defense | 1 |
| Drilling | 1 |
| Earth sciences | 2 |
| Electronics | 6 |
| Oil / petroleum | 3 |
| Polymers | 1 |
| Project management | 1 |
| Space | 2 |
| Technology | 7 |
| Telecommunications | 1 |
| United Nations | 2 |
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