9776| 19
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請教大家這是什么材料 |
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點評
對,也有可能是尼龍
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點評
應該是,耐熱耐磨自潤滑
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Archiver|手機版|小黑屋|機械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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