n.多面体
The small polyhedron is the struggle or changes? 小小的多面体是斗争还是改变？
Polyhedron-base Structure, which consists of space-filling polyhedron models, is a new type of space structure. 摘要多面体空间结构是一种新型的空间结构类型，基于能够填充三维空间的多面体模型而构成。
