“美国3D打印技术只能打印塑胶部”，真是新义和团。我们美国公司生产的3D打印机，能打十几种金属

来源: huiming1234 于 2015-08-18 22:43:22 [旧帖] [给我悄悄话] 本文已被阅读：次

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