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| casing collar; casing coupling | |||
| case adapter; casing adapter; casing connections; casing joint | |||
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套管接箍 : 41 phrases in 7 subjects |
| Drilling | 7 |
| Engineering geology | 1 |
| Geophysics | 17 |
| Mechanics | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 5 |
| Technology | 8 |
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