3354| 6
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3/8螺紋能自制量具嗎?通止規 |
點評
國標的管螺紋也是采用的英制體系。
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Archiver|手機版|小黑屋|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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