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| зона осветления (стекловаренной печи) | |||
| зона осветления (в стекловаренной печи) | |||
| refining zone: 20 phrases in 6 subjects |
| Electronics | 3 |
| Makarov | 1 |
| Metallurgy | 5 |
| Microelectronics | 2 |
| Silicate industry | 2 |
| Technology | 7 |
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