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分 布矩 : 30 phrases in 10 subjects |
| Air defense | 1 |
| Artificial intelligence | 1 |
| Bridge construction | 2 |
| Business | 1 |
| Engineering geology | 2 |
| Mathematics | 2 |
| Polymers | 1 |
| Refrigeration | 2 |
| Statistics | 2 |
| Technology | 16 |
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