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图片内容是:挤压攻丝底孔对照表图
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丝攻底孔对应大全
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美制挤压丝锥底孔
挤压丝锥底孔直径一览表
挤压丝攻底孔尺寸
攻丝螺纹底孔直径大全
无屑丝锥用底孔表
7/16-20-2b unf使用挤压丝锥加工钢件(40cr)时底孔是多大?
挤压丝锥-底孔尺寸
丝攻底孔对应大全
螺纹攻牙底孔孔径对照表.xls