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電鍍鋅,螺紋孔和通孔為何鍍不上 |
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點評
行家
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點評
螺紋孔底部在制作掛具和輔助陽極后,仍然鍍不上
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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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