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| rotary drilling machine; rotary drilling rig; rotary rig | |||
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旋转 钻钻机 : 46 phrases in 9 subjects |
| Bridge construction | 2 |
| Business | 2 |
| Electronics | 1 |
| Engineering geology | 2 |
| General | 1 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Rail transport | 2 |
| Technology | 33 |
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