greyout灰晕,灰暗greyadj.灰色的n.灰色vi.变成灰色=<美>graygrey association grade灰色关联度Grey-headed Starlingn.灰头椋鸟grey prediction method灰色预测方法grey Markov Prediction灰色马尔可夫预测法grey relation analysis灰色关联分析grey half-generation灰色半解生成Grey-headed Parakeetn.灰头鹦鹉grey-level difference灰度差异grey predictive control灰色预测控制grey relational concept灰色关联