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套管外封隔器
| 接箍
| 套管外封隔器 | |
| dril. | external casing packer |
| 接箍 | |
| dril. | knot |
| geol. | coupling |
| oil | box coupling; collar |
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| external casing packer | |||
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| external casing packer | |||
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套管外封隔器 : 1 phrase in 1 subject |
| Mechanics | 1 |
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