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一轴局部要渗碳,其它地方不能有碳渗入,用什么办法保证其它部位不渗碳呢? |
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Archiver|手机版|小黑屋|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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