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| rate of opening (клапана) | |||
| степень открытия: 11 phrases in 8 subjects |
| Automobiles | 1 |
| Caspian | 1 |
| Construction | 2 |
| Drilling | 2 |
| Energy industry | 1 |
| General | 1 |
| Oil / petroleum | 1 |
| Technology | 2 |
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