We mean patents on actual 3d-printing processes, tools and materials that are filed by companies that make and sell 3d printers and related technologies.
我们的意思是在被提出的公司，制造和销售3d打印机及相关技术，实际的3d打印流程，工具和材料的专利。
We mean patents on actual 3d-printing processes, tools and materials that are filed by companies that make and sell 3d printers and related technologies.
我们的意思是在被提出的公司，制造和销售3d打印机及相关技术，实际的3d打印流程，工具和材料的专利。
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