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| 焊缝管 | |||
| 焊接管 | |||
| 焊管 | |||
| 焊制管 | |||
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| 焊接管 | |||
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| 焊接管连续焊成的 | |||
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welded pipe : 142 phrases in 13 subjects |
| Architecture | 3 |
| Bridge construction | 2 |
| Chemistry | 3 |
| Drilling | 4 |
| Ecology | 1 |
| Electronics | 1 |
| General | 1 |
| Hydraulics | 1 |
| Metallurgy | 54 |
| Oil / petroleum | 24 |
| Shipbuilding | 1 |
| Steel production | 3 |
| Technology | 44 |
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