4538| 10
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玻纖棒能車螺紋嗎 |
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點評
你們見過嗎?里面不是纖維嗎?請問怎么形成螺紋呢?
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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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