6041
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12
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40cr锻件轴,粗加工,调质,精加工,高频淬火,磨量发现裂纹,最后探伤有裂纹 |
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小黑屋|手机版|Archiver|机械必威体育网址(京ICP备10217105号-1,京ICP证050210号,浙公网安备33038202004372号)
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