2801| 4
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常用淬火介質 |
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樓主應該收集一下,這些介質得冷卻特性曲線和其他得參數啊
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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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