grey D灰Dgreyadj.灰色的n.灰色vi.变成灰色=<美>graygrey order whiteout灰序白化grey goose nageoire灰鹅飘毛grey Verhulst model灰色Verhulst模型grey autoregression灰色自回归grey of the morning天蒙蒙亮；拂晓时分grey reative theory灰色理论grey related degree灰色关联度grey kid skin plate青小山羊皮褥子grey-fuzzy theory灰色模糊理论grey relative level灰色关联度