• 长有灰白发的人,白发老人

greyzem灰色土greyadj.灰色的n.灰色vi.变成灰色=<美>grayGrey cast iron pipe flange灰铸铁管法兰grey rela- tion analysis灰色关联分析grey relational projection灰关联投影grey relationship analysis灰色关联分析grey related system theory灰色系统理论grey differential equation灰色微分方程grey level value statistic灰度统计grey - relation analysis灰色关联度grey level co-occurrence灰度共生矩阵grey level tran sformation[计] 灰度变换