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| plane of unconformity; surface of uncomformity (在比较新的覆盖层沉积之前，较老地层受侵蚀所造成的侵蚀面) | |||
| uncomformity surface | |||
| surface of unconformity | |||
| hardground; unconformable surface; unconformity surface | |||
| hard ground | |||
| 不 整合面: 14 phrases in 4 subjects |
| Drilling | 1 |
| Geology | 1 |
| Oil / petroleum | 3 |
| Technology | 9 |
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