- gauge edge
- 刮刀: slicker; carryall; erasing k ...
- 钻头: boring crown; bore bit; dril ...
- 外缘: outer fringe
- 刃: the edge of a knife,sword,et ...
- 刮刀钻头: blade bit; blade drag bit; drag drill bit; drag type bit; dragdrillbit; single-bladed bit; winged scraping bit
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