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| переходная втулка; редуктор | |||
| 异径接管: 19 phrases in 8 subjects |
| Drilling | 1 |
| General | 5 |
| Hydraulics | 1 |
| Oil / petroleum | 1 |
| Oil and gas technology | 1 |
| Oil processing plants | 3 |
| Radio | 2 |
| Technology | 5 |
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