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| 71. | continuous sidewall core cutter |
| 连续式井壁岩心切割器 |
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| 72. | core intersection |
| 岩心断面；产油层；油层厚度 |
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| 73. | core gripper with slip-spring |
| 卡簧式岩心爪 |
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| 74. | rubber sleeve core barrel |
| 橡胶岩心套取心筒 |
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| 75. | magnetic core-orientation test |
| 磁法岩心定向测定 |
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| 76. | lever feed core drill |
| 手把给进岩心钻机 |
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| 77. | single type core barrel |
| 单筒式岩心筒 |
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| 78. | core gripper with slip |
| 卡瓦式岩心爪 |
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| 79. | natural water-sensitive core |
| 天然水敏性岩心 |
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| 80. | recovery of core |
| 取心收获率；取岩心 |
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