cone rock bit锥形: taper; cone; cone-shape凿岩: drilling钻头: boring crown; bore bit; dril ...凿岩钻头: rock bit牙轮凿岩钻头: roller-type rock 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:锥形凿岩钻头，即可在微信中查询翻译
