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锅炉炉管 : 180 phrases in 14 subjects |
| Architecture | 2 |
| Chemistry | 5 |
| Construction | 3 |
| Ecology | 1 |
| Electric machinery | 3 |
| Electronics | 5 |
| General | 3 |
| Metallurgy | 17 |
| Nautical | 16 |
| Oil / petroleum | 8 |
| Refrigeration | 1 |
| Shipbuilding | 22 |
| Technology | 93 |
| Textile industry | 1 |
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