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混凝土 拌合 : 30 phrases in 10 subjects |
| Architecture | 5 |
| Ecology | 1 |
| Electronics | 5 |
| Engineering geology | 5 |
| General | 2 |
| Hydroelectric power stations | 1 |
| Metallurgy | 4 |
| Project management | 2 |
| Rail transport | 1 |
| Technology | 4 |
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