- bortset bit
- diamond-impregnated bit
- diamond-set bit
- 刚: hard; rigid; firm; unyieldin ...
- 石: dan,a unit of dry measure fo ...
- 钻头: boring crown; bore bit; dril ...
- 表镶金刚石钻头: diamond surfaceset bit; diamond-set bit; diamy; surface-set bit
- 机镶金刚石钻头: mechanically set bit
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