HB 3492-1985 不通孔用四齿平刃锥柄扩孔钻d=10~32mm.pdf

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HB 3492-1985 不通孔用四齿平刃锥柄扩孔钻.pdf

HB 3492-1985 不通孔用四齿平刃锥柄扩孔钻 d＝10~32mm.pdf

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