过几年美国3D PRINTING技术成熟, 什么都能在家印出来,

来源: worriedmom1 于 2012-08-25 19:54:47 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

这些基础设施就都白造了. 乱花钱.

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