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專用滲碳鋼跟45鋼,淬火表面硬度,哪一個可以做到更高? |
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點評
45可以自回火嗎?
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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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