6935| 11
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求教:是什么原因導致盲孔螺紋的中間部分掉扣? |
點評
有專業名字或牌號啥?
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點評
絲錐中徑大了吧
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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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