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| долото из твёрдых сплавов; карбидный бур | |||
| сверло, оснащённое твёрдым сплавом | |||
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硬质合金钻头 : 6 phrases in 4 subjects |
| Drilling | 1 |
| General | 1 |
| Geology | 2 |
| Oil / petroleum | 2 |
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