gray field的相關(guān)資料：
臨近單詞
grayest
gray
gray-scale projection algorithm
Gray-cheeked Flycatcher Warbler
gray relational decision-making
gray correlation analysis methods
gray connection projection method
Gray-and-Brown Laughingthrush
Gray hairs should be respected.
gray level histogram equalization
Gray scale for assessing staining
gray level co-occurreoce matrix
