单词	3D printing
释义	3D printing noun variants or less commonly 3-D printing : the manufacturing of solid objects by the deposition of layers of material (such as plastic) in accordance with specifications that are stored and displayed in electronic form as a digital model Whereas traditional manufacturing techniques start with a solid block and cut unwanted material away from it, 3D printing … builds up material in layers, producing precisely the object desired with almost no waste. Mark Betancourt Imagine dreaming up a toy for your kids, sketching it out on your computer, and minutes later—voilà!—you're holding the real thing in your hand. Such is the promise of 3-D printing, a niche but growing technology that Bre Pettis and his Brooklyn-based start-up, MakerBot, believe will become as common in homes as the printers that crank out our photos and household documents. Andréa Ford et al. called also additive manufacturing Word History First Known Use 1992, in the meaning defined above
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