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分布情况 : 16 phrases in 10 subjects |
| Aviation | 1 |
| China | 1 |
| Economy | 1 |
| Electronics | 1 |
| Engineering geology | 1 |
| Finances | 1 |
| Management | 2 |
| Metallurgy | 1 |
| Securities | 3 |
| Technology | 4 |
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