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填块 : 85 phrases in 10 subjects |
| Architecture | 5 |
| Bridge construction | 4 |
| Drilling | 1 |
| Electronics | 1 |
| Engineering geology | 2 |
| General | 4 |
| Hydroelectric power stations | 4 |
| Metallurgy | 1 |
| Rail transport | 2 |
| Technology | 61 |
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