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| средняя втулка | |||
| промежуточная рубашка | |||
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中间 套 : 18 phrases in 7 subjects |
| Cables and cable production | 1 |
| Drilling | 4 |
| Electronics | 1 |
| General | 8 |
| Oil / petroleum | 1 |
| Oil and gas technology | 1 |
| Technology | 2 |
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