楼主: jqjqjq
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40Cr 零件渗碳淬火后内孔全现黑色---[请教] |
发表于 2006-12-9 11:41:13
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Re: 40Cr 零件渗碳淬火后内孔全现黑色---[请教]
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发表于 2006-12-9 11:59:42
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Re: 40Cr 零件渗碳淬火后内孔全现黑色---[请教]
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