The utility model has the advantages of simple structural design, small size, low cost, easy operation, labor saving, time saving and low cutting consumption for drill bit sharpening.

  • 具有一是结构设计简单、体小、成本低;二是操作简便、省工省时且钻头刃磨消耗小的优点。

  • 互联网摘选 2025-01-20 11:52:00

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