4325| 6
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40°螺旋槽絲錐攻出來的螺紋通規不過什么原因 |
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點評
鈷領的基本是DIN標準。螺紋規呢?哪家的?
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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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