被印材料 J1 被印材料 J1 Q：何谓被印材料(material to be printed)？ A：能接受油墨并能表现出复制印纹的任何物体，例如：纸张、纸板、铁皮、塑料皮、 木板等。
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Some 3D systems allow the properties and internal structure of the material being printed to be varied.
有些三维系统可以把材料的属性和内部结构印刷成各式各样。
Much of today's printed material will not survive to be available for future generations .
许多今天的印刷资料很难保存下来为后人所用。
In addition to the required reader, or when the required reader does not cover the material taught in class, there will also be printed materials to be handed out at the beginning of each class.
除了必读资料外，当必读资料无法涵盖该节课所要教的内容时，在每节课开始时也会分发一些印刷的教材。
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