| 正面 | elevator Elevator in drill site means tool to hold pipe or casing |
|---|---|
| 背面 | 电梯、吊卡 吊卡在井场意味着吊钻杆或套管的工具 |
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Next card: Slip making breaking drill string 卡瓦 卡瓦在拆或组装钻柱的时候经常用到
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