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| 砾石回填衬垫 | |||
| 砾石充填法; 砾石填塞 | |||
| 砾石充填 | |||
| 卵石填料; 砾石填料; 砾石回填; 砾石堵塞; 砾石充填 (法); 填砾 | |||
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| 填砾; 砾石填料 | |||
| 砾石充填 | |||
| 砾石填料层; 砾石填充层 | |||
| gravel packing: 88 phrases in 8 subjects |
| Chemistry | 1 |
| Drilling | 5 |
| Engineering geology | 2 |
| Geophysics | 2 |
| Mining | 8 |
| Oil / petroleum | 62 |
| Rail transport | 1 |
| Technology | 7 |
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