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大家好!熱處理工藝中,C56、G42、G52、D0.5-900、T215、T235、C42各是什么含義? |
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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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