在3DEC软件中，三维柱状节理模型生成程序(3d columnar joint model generation program 3DEC)

一种混凝土骨料三维随机投放模型，为混凝土细观力学研究提供一种快捷的三维建模源代码。(A three-dimensional random delivery model of concrete aggregate provides a fast 3D modeling source code for concrete micromechanics research.)

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