7347| 19
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電機軸,材質20CrMnTi 碳氮共滲,熱處理變形問題 |
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點評
這種簡陋方式......
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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,浙公網安備33038202004372號 )
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