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碎紙機模型分享 |
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尋找可以降低PA6和POM零件表面摩擦系數(shù)的添加劑(潤滑劑和爽滑劑) | ||
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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(wǎng)安備33038202004372號 )
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