7770| 24
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隨手拍26—少了工序失了面子 |
點評
是熔覆
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點評
還有種可能是密封圈部位磨損。
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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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