Existing 3-D printers, also called rapid prototyping machines, build structures layer by layer.

已有的三维打印机也被称做快速成型机，可以一层一层地构建出结构。

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A numerical method for the lower bound limit analysis of 3-d structures under multi-loading systems is presented.

本文提出了多组载荷作用下三维结构下限分析的数值方法。

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A mixed FE-BE method is used to analyze fluid-structure coupling free vibrations of 3-d structures in an infinite liquid with constant depth.

应用有限元-边界元混合法分析了等深度的无限大片状域流场中三维结构的自由耦振问题。

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Existing 3-D printers, also called rapid prototyping machines, build structures layer by layer.

FORBES: MIT Architect Plans to Print Her Own Buildings

The consortium tested the practicalities of using a printer on the Moon by setting up a D-shape 3D printer, which are used to print very large house-sized structures, in a vacuum chamber with simulated lunar material.

BBC: 3D printed moon building designs revealed