thin core bit薄壁: thin-wall取: take; get; fetch心: the heart钻头: boring crown; bore bit; dril ...直壁取心钻头: straight wall coring 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:薄壁取心钻头，即可在微信中查询翻译
