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| 空气 预热: 52 phrases in 12 subjects |
| Automobiles | 1 |
| Chemistry | 1 |
| Electronics | 7 |
| Metallurgy | 14 |
| Nautical | 3 |
| Oil / petroleum | 3 |
| Plastics | 1 |
| Rail transport | 1 |
| Refrigeration | 2 |
| Shipbuilding | 1 |
| Technology | 16 |
| Textile industry | 2 |
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