A good way of understanding how rapid protoyping works is to imagine a printer that prints plastic powder instead of ink.
要理解快速原型制作法的原理有个好法子，就是想象打印机使用的不是墨水，而是塑料粉末。
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Called the Objet Connex500 rapid prototyper, the printer can print in multiple materials.
该打印机名为Objet Connex500快速图片打印机，可打印多种材料。
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Organovo’s 3D bio-printer works in a similar way to some rapid-prototyping machines used in industry to make parts and mechanically functioning models.