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| 刮刀〔翼状〕钻头 | |||
| 鱼尾钻头 | |||
| 多刃旋转钻头既有切削动作，又有硬金属片沿刃部的插人的旋转扩孔器式钻头 | |||
| 刮刀钻头; 鱼尾【刮刀】钻头 | |||
| 翼状钻头 | |||
| 磨削钻头; 刮刀型钻头; 割刀; 镐; 切削型钻头; 十字镐; 刮刀式钻头 | |||
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drag bit : 25 phrases in 5 subjects |
| Drilling | 3 |
| Engineering geology | 2 |
| Metallurgy | 1 |
| Oil / petroleum | 5 |
| Technology | 14 |
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