钻头

• Accord with down hole hammer from atlas - copco
  与atlas - copco公司相通用的钻头
• Drills and reamers - specification for twist drills
  钻头和铰刀.麻花钻的规范
• Wood bits ; straight flute bits straight flute drills
  木工钻.长槽钻直槽钻头
• 14 drilling with cone ( drag ) bit in the section
  此段地层采用牙轮（刮刀）钻头钻进。
• . . . making goddamn driii bits for the rest of my iife
  . . .下半辈子都得做他妈的钻头了
• . . . making goddamn drill bits for the rest of my life
  . . .下半辈子都得做他妈的钻头了
• When the bit goes through the bop , slow down , please
  当钻头通过防喷器时，慢一点放。
• M . w . point wood under - material - use drill screws
  木材质用的钻头螺丝mwpoint
• To destroy or disable the diggers inside the dock
  我们必须先摧毁巨大钻头
• Contact stress analysis on the bearing of single - cone bits
  单牙轮钻头轴承接触应力分析