 |
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| 钻杆串包括钻杆及工具接头等下井附件 | |||
| 钻管; 钻杆; 钻杆柱; 钻具组 | |||
| 钻柱 | |||
| 钻杆组 | |||
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drill string : 64 phrases in 5 subjects |
| Drilling | 16 |
| Earth sciences | 1 |
| Engineering geology | 2 |
| Oil / petroleum | 28 |
| Technology | 17 |
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