2836| 5
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高頻淬火凸輪面距離孔15mm處經常出現裂紋 |
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點評
就是,圖都沒有一個
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Archiver|手機版|小黑屋|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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