14217| 42
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設計這個油缸,請教 |
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點評
油缸內壁光潔度不能太過,潤滑性差。
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小黑屋|手機版|Archiver|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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