greyzem灰色土greyadj.灰色的n.灰色vi.变成灰色=<美>grayGrey Relevance Total Analysis灰色关联综合分析grey prediction fuzzy control灰色预测模糊控制grey Markov forecasting model灰色马尔科夫预测模型grey relation degree analysis灰关联分析grey polyester viscose poplin涤粘府绸坯grey comprehensive evaluation灰色综合评价grey relative analysis method灰色关联分析法grey relation analysis method灰关联分析法grey system forecasting model灰色建模预测grey system decision-making灰色系统