2892| 6
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小批量加工,尋合作 |
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點評
sorry,哪有5絲的公差。
沒法磨,車是有難度的。還要電鍍。鍍層要掌握好。
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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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