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| 碳化物硬质合金刀头 | |||
| 硬质合金钻头 | |||
| 碳化物刀头 | |||
| 硬质合金刀头 | |||
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carbide bit : 44 phrases in 6 subjects |
| Drilling | 5 |
| Engineering geology | 5 |
| General | 2 |
| Mechanics | 1 |
| Oil / petroleum | 8 |
| Technology | 23 |
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