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| 套管引鞋 | |||
| 套筒滑板; 套管引靴; 套管导正装置; 套管导向帽 | |||
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casing guide : 7 phrases in 4 subjects |
| Drilling | 2 |
| Oil / petroleum | 1 |
| Rail transport | 1 |
| Technology | 3 |
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