Jigs make it possible to drill, ream, and tap holes at much greater speeds and with greater accuracy than when the holes are produced by conventional hand methods.
相对于用常规的手工方法加工孔，钻模使得钻孔、铰孔和攻丝速度快很多而且精度更高成为可能。
2
The taper tap can effect different fishing operations when equipped with RH thread or LH thread drill pipes and other tools.
公锥与正、反扣钻杆及其他工具配合使用，可实现不同的打捞工艺。
3
LW—2 bench style universal cutter grinder is used for grinding normal cutter such as various kingds of milling cutters, reamers, lathe tools, planning tools, screw tap and shaving drill ect.