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| белая фаза (на поверхности трения) | |||
| белая фаза (твёрдые слаботравящиеся слои на поверхности трения стальных и чугунных деталей) | |||
| white phase: 4 phrases in 3 subjects |
| Communications | 1 |
| Mass media | 1 |
| Technology | 2 |
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