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| пипковая резьба | |||
| наружная резьба | |||
| 公扣: 24 phrases in 11 subjects |
| Business | 2 |
| Drilling | 5 |
| General | 7 |
| Mechanic engineering | 2 |
| Name of organization | 1 |
| Oil / petroleum | 1 |
| Oil and gas | 2 |
| Oil and gas technology | 1 |
| Oil processing plants | 1 |
| Oilfields | 1 |
| Skydiving | 1 |
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