- diamond drill rod
- 金刚石: diamond; adamas; carbite; ad ...
- 钻进: worm one's way in; drilling
- 钻杆: bull rod; bar; rod; drill st ...
- 金刚石钻进: diamond boring; diamond drilling; diamondboring; diamonddrilling
- 金刚石钻进的钻孔: diamond drill hole; diamonddrill hole
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