A geometric pattern that is repeated at ever smaller scales to produce irregular shapes and surfaces that cannot be represented by classical geometry. Fractals are used especially in computer modeling of irregular patterns and structures in nature.

• 不规则碎片形一种几何形状，被以越来越小的比例反复折叠而产生不能被标准几何所定义的不标准的形状和表面。不规则碎片形尤被用于对天然不规则的模型和结构的计算机模型制作中