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| 钢丝绳冲击钻; 石钻; 钻石机 | |||
| 绳式顿钻钻机 | |||
| 衝鑽; 旋衝鑽 | |||
| 冲击钻; 钢丝绳冲击钻 | |||
| 冲击钻; 旋冲钻 | |||
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churn drill : 17 phrases in 5 subjects |
| Drilling | 3 |
| Engineering geology | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Oil / petroleum | 2 |
| Technology | 10 |
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