self sharpening bitself-sharpening bit自: self; oneself; one's own磨: mill; millstones式: type; style钻头: boring crown; bore bit; dril ...自磨钻头: self sharpening bit; self-sharpening bit下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:自磨式钻头，即可在微信中查询翻译
