3638| 10
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GCr15 鋼加工件開裂分析報告(請老師們幫忙看看這樣分析完后能確定就是熱處理問題嗎) |
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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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