3671| 4
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GCr15的零件长13一头直径5.1,一头M4,局部高频淬火到55-58 |
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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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