8198| 15
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請教Amazon echo這種密孔外殼的加工工藝? |
點評
蝕刻,,沖壓,高速鉆孔,,等等工藝而已,,開個玩笑
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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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