Among the alternatives are fused deposition modeling and so-called 3-D printers, which can crank out pieces quickly and inexpensively, although they may be a bit less accurate and long-lasting.

 
  • 同类技术还包括熔融沉积成形以及3D印表机,3D列印技术可快速制作模型,成本不高,不过往往不够精确也不够耐用。
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