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                    鉸刀和擴孔刀哪一個的精度高點？

                    2020-04-11

                    鉸刀和擴孔刀哪一個的精度高點？當然是鉸刀啊，鉸刀的擴張量或是收縮量在0.005~0.02以內，擴孔鉆擴張量在0.05~0.1

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