cutter shell钻头: boring crown; bore bit; dril ...牙轮: gear wheel; gear体: body; part of the body钻头牙轮: bit cone cono de taladro钻头牙轮齿: bit prong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:钻头牙轮体，即可在微信中查询翻译
