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51. | formation geology |
| 建造地质学 |
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52. | formation caving |
| 井壁坍塌 |
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53. | formation compaction |
| 地层压实 |
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54. | formation porosity |
| 地层孔隙度 |
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55. | formation constant |
| 形成常数 |
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56. | formation function |
| 形成函数 |
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57. | formation crookedness |
| 地层弯斜度 |
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58. | formation packer |
| 地层封隔器 |
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59. | formation drillability |
| 地层可钻性 |
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60. | formation restoratio |
| 地层复原 |
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