8071| 35
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3D打印都還沒搞懂,4D就已經來了 |
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點評
可以是復合材料(該材料做骨架),應用就廣了。
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點評
我國的革命早已啟動,革老百姓的命!
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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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