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| процесс производства газовой сажи | |||
| black process: 13 phrases in 10 subjects |
| Chemistry | 2 |
| Electrochemistry | 1 |
| Mass media | 1 |
| Metallurgy | 1 |
| Oil and gas | 1 |
| Polygraphy | 1 |
| Programming | 1 |
| Silicate industry | 1 |
| Technology | 1 |
| Textile industry | 3 |
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