core-drilling exploration
常見例句
- Hydro-hammers provide high penetration rate in hard rocks, less borehole deviation, and high core recovery in exploration drilling. The technology has been established and its uses are being extended.
液動錘在鉆探施工中具有能提高硬巖鉆進速度、減小孔斜和提高巖心采取率等優(yōu)點，技術(shù)成熟，應用領域正在拓寬。
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