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| 环管; 环形通道; 环形沟; 环水管 | |||
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кольцевой канал : 20 phrases in 6 subjects |
| Aviation | 3 |
| Electronics | 5 |
| General | 1 |
| Jet engines | 1 |
| Metallurgy | 1 |
| Technology | 9 |
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