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| 51. | ocular penetration |
| 物损真睛 |
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| 52. | void penetration |
| 空洞穿透 |
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| 53. | shaft penetration |
| 竖井穿孔 |
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| 54. | tip penetration |
| 磁头尖插入度 |
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| 55. | side penetration |
| 侧面溶深 |
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| 56. | casing penetration |
| 套管深度 |
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| 57. | peaceful penetration |
| (经由贸易、投资等的) 和平渗透 |
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| 58. | proppant penetration |
| 支撑剂穿透深度 |
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| 59. | weather penetration |
| 气象穿越 |
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| 60. | bit penetration |
| 钻头吃入深度；钻头进尺速度 |
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