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| внутренний клапан | |||
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| клапанный блок регулятора | |||
| internal valve: 28 phrases in 9 subjects |
| Armored vehicles | 1 |
| Hydraulic engineering | 1 |
| Mechanic engineering | 1 |
| Oil / petroleum | 2 |
| Oil and gas technology | 2 |
| Oilfields | 1 |
| Technology | 12 |
| Thermal engineering | 6 |
| Transport | 2 |