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什么鋼材熱處理后 變形較小,硬度很強(qiáng),耐磨很大,略有韌性? |
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小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號-1,京ICP證050210號,浙公網(wǎng)安備33038202004372號 )
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