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自升式井架
| 伸缩
| 导轨
| 自升式井架 | |
| dril. | self-elevating mast |
| 伸缩 | |
| gen. | collapsing; come-and-go |
| archit. | magnification |
| bridg.constr. | expansion and contraction |
| dril. | dilatation |
| sport. | flex |
| steel. | retract |
| tech. | dilation; stretching |
| 导轨 | |
| met. | fence |
| |||
| self-elevating mast | |||
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自升式井架 : 3 phrases in 1 subject |
| Drilling | 3 |
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