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请问DSCM419是否可写成20Si25Mn70?DSCM419最接近哪个牌号钢的成分? |
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小黑屋|手机版|Archiver|机械社区 ( 京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号 )
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