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| двухконтактный (Юрий Гомон) | |||
| двухниппельный | |||
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| двойная связка | |||
| double-pin: 36 phrases in 13 subjects |
| Automated equipment | 1 |
| Automobiles | 2 |
| Drilling | 2 |
| Electrical engineering | 1 |
| Makarov | 1 |
| Mechanic engineering | 1 |
| Oil / petroleum | 4 |
| Oil and gas technology | 3 |
| Oilfields | 1 |
| Polygraphy | 1 |
| Production | 1 |
| Technology | 11 |
| Transport | 7 |