gradationn.渐变;阶段;等级;刻度;元音交替
gradation of image图像深淡程度
gradation of color颜色的浓淡程度
gradations of image图象的灰度等级,图象的深淡层次
gradation histogram灰度直方图
gradation treatment分级
gradation adjusting级配调试
gradation stamp tax渐近印花税法
gradation detection级配检验
gradation of cities城市的层次性
gradation aggregate级配碎石