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求助-這個東西難做嗎?要打9941個孔,材質是日立金屬 HPM7 (模具鋼) |
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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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