| 释义 |
1 [机]?铰孔钻头 ... reamer bolt 铰刀螺栓 reamer drill 铰孔钻头 end reamer 不通孔铰刀,前锋铰刀...
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Specification: twist drill, three-blade drill, reamer, end-milling cutter. - 2
Drill pipe is attached to the far side of the reamer so that it can be pulled back from the near side, once the pre-reaming operation is complete. 扩孔器远侧与钻杆相连，当预扩孔作业完成后，可以将扩孔器从近侧拖回到远侧。 - 3
Usually the hole-based system is used, as the results in a reduction in the variety of drill, reamer, broach and gauge tooling required. 通常使用的是基孔 制，因为这会减少所需要的钻头、铰刀、拉刀和计量工具的种类。
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