Leaded Free Cutting Steel
主要金属元素之物理性质 Physical properties of major Metal Elements 含铅易车钢 Leaded Free Cutting Steel 金属材料的试验方法 The Method of Metal inspection ..
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... 过共释钢 Hype-eutectoid 含硫易车钢 Sulphuric Free Cutting Steel 含铅易车钢 Leaded Free Cutt ...
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