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块 段 : 29 phrases in 10 subjects |
| Desert science | 1 |
| Earth sciences | 1 |
| Electronics | 4 |
| Engineering geology | 2 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 2 |
| Space | 1 |
| Technology | 14 |
| Telecommunications | 1 |
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