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| механизированная крепь (MichaelBurov) | |||
| щитовая крепь | |||
| shield support: 15 phrases in 8 subjects |
| Astronautics | 1 |
| Construction | 1 |
| Electronics | 3 |
| Energy industry | 1 |
| Mining | 3 |
| Nanotechnology | 1 |
| Rail transport | 1 |
| Technology | 4 |
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