5741| 20
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加工后發(fā)現(xiàn)有裂孔,求指教什么原因 |
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點評
就應該這樣。他們心里有數(shù)的。
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小黑屋|手機版|Archiver|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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