如何用手打洞

一个关于如何用手打洞的一步一步的视频。

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上传日期:OandP Tube 2019-02-13

个人防护装备

当在车间使用任何机械时,在处理材料和使用手动和电动工具时,请记住遵守适当的安全措施。

当敲击孔时,钻头或丝锥会在切割金属的地方留下毛刺。触摸这些部位时要戴上手套,以防止划伤、金属屑和金属垂直温度升高。

利用图表

利用图表

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