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圆 墩 : 44 phrases in 11 subjects |
| Architecture | 2 |
| Bridge construction | 16 |
| Desert science | 1 |
| Electric machinery | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Hydroelectric power stations | 3 |
| Metallurgy | 1 |
| Port facilities | 1 |
| Technology | 15 |
| Water resources | 1 |
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