说明：  灰色预测是就灰色系统所做的预测。所谓灰色系统是介于白色系统和黑箱系统之间的过渡系统。其具体的含义是:如果某一系统的全部信息已知为白色系统，全部信息未知为黑箱系统，部分信息已知，部分信息未知，那么这一系统就是灰色系统。
(Grey prediction is the prediction made on grey system. The so-called grey system is a transition system between the white system and the black box system. Its specific meaning is: if all information of a system is known as a white system, all information is unknown as a black box system, some information is known, some information is unknown, then this system is a grey system.)