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煤粉 : 159 phrases in 17 subjects |
| Cement | 4 |
| Chemistry | 1 |
| Construction | 4 |
| Electronics | 9 |
| Energy industry | 3 |
| General | 67 |
| Geology | 9 |
| Metallurgy | 3 |
| Mineral processing | 1 |
| Mining | 4 |
| Oil / petroleum | 4 |
| Oil and gas | 1 |
| Oil processing plants | 7 |
| Oilfields | 1 |
| Shipbuilding | 2 |
| Technology | 38 |
| Thermal engineering | 1 |
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