3D 打印机已经被用来制作实物大小的汽车零件模型和人造身体部位，例如耳朵。
3D printers are already used to make life-size models of car parts, and man-made body parts, such as ears.
可在金属、塑料、玻璃、搪瓷、薄膜、尼龙等产品上的任意部位凹凸不平面上打印。
In metal, plastic, glass, enamel, film, nylon and other products on any part of the uneven surface of the print.
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