2507| 2
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塑料模,用S136要熱處理,,還有沒有別的鋼材不用熱處理---請教 |
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網安備33038202004372號 )
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