元素材质变换可以规则或随机地分配材质标识给包含多种图元的物体适用于如夜晚建筑窗户发光的安排
Element material transformation can be used to assign material identifiers regularly or randomly to objects containing multiple primitives, such as the arrangement of lighting in a building window at night
以上为机器翻译结果，长、整句建议使用 人工翻译 。