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怎樣判斷鋼材含碳量? |
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點(diǎn)評
我就只知道一個(gè),含碳量在百分之1.1以下的時(shí)候,含碳量越高,硬度越高。其他三個(gè)怎么解釋,求前輩教導(dǎo)。
你看,這就叫專業(yè)~
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