chisel shaped bitchisel-shaped bit冲击: lash; pound式: type; style一: one钻头: boring crown; bore bit; dril ...一字形钻头: bull bit; moil; straight 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:冲击式一字形钻头，即可在微信中查询翻译
