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| трубки подогревателя | |||
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| лампа косвенного накала | |||
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| heater tubes: 23 phrases in 11 subjects |
| Armored vehicles | 1 |
| Electronics | 1 |
| Energy industry | 1 |
| Nautical | 4 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Rail transport | 1 |
| Silicate industry | 2 |
| Technology | 7 |
| Thermal engineering | 2 |