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跪求前輩們給我點意見這三個行業:沖壓模制造與設計,CNC編程,注塑哪個比較好點 |
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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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