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键 参数 : 19 phrases in 10 subjects |
| Aviation | 3 |
| Chemistry | 1 |
| Cryptography | 2 |
| Electronics | 1 |
| Horticulture | 1 |
| Information technology | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Space | 5 |
| Technology | 2 |
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