3886| 4
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GCr15的零件長13一頭直徑5.1,一頭M4,局部高頻淬火到55-58 |
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小黑屋|手機版|Archiver|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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