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| pipe layout (eternalduck) | |||
| схема труб: 25 phrases in 8 subjects |
| Construction | 2 |
| Energy industry | 1 |
| Engineering | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 1 |
| Pipelines | 14 |
| Sakhalin | 3 |
| Thermal engineering | 1 |
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