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| 实际垂直井深 | |||
| 真垂直深度｛钻｝ | |||
| 真垂直深度 | |||
| 垂深; 实际垂直深度; 真垂向井深 | |||
| true vertical depth: 10 phrases in 3 subjects |
| Drilling | 3 |
| Navigation | 6 |
| Oil / petroleum | 1 |
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