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| 井壁管 | |||
| 套管; 下套管 | |||
| 井壁; 井筒; 井口管; 竖井井管; 孔壁管; 井套; 沉井; 井内套筒; 井壁板; 井框 | |||
| 外壳 | |||
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well casing : 32 phrases in 8 subjects |
| Business | 1 |
| Drilling | 3 |
| Engineering geology | 3 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Hydraulics | 1 |
| Metallurgy | 1 |
| Oil / petroleum | 2 |
| Technology | 20 |
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