- casing shoe bit
- 套管: drivepipe; annular tubes; br ...
- 底: bottom; base
- 金刚石钻头: bort bit; diamond bit; carbo ...
- 金刚石钻头: adamantine drill; bort bit; carbon bit; diamon bit; diamond bit; diamond boring crown; diamond crown; diamond drill bit; diamond drilling bit; diamond head; diamond impregnated drill; diamond nib; diamond penetrator; diamond-core drill; diamond-mpregnated drill; diamondbit; diamonddrillingbit
- 黑金刚石钻头: carbon bit; carbonado bit
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