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| 岩心钻探 | |||
| 岩芯钻进; 取芯钻进 | |||
| 取心钻进钻进时,在孔底保留岩心，并主要以提取出的岩心来研究了解地下地质情况的钻进方法 | |||
| 钻孔取样; 钻取岩芯 | |||
| 取心钻进 | |||
| 岩芯钻探; 取芯钻探; 岩心钻进; 取土样钻探 | |||
| 实心钻探 | |||
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| 岩屑; 岩粉; 钻粉 | |||
| core boring: 13 phrases in 2 subjects |
| Hydroelectric power stations | 3 |
| Technology | 10 |
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