短語詞組短語frequency difference histogram 頻率直方圖frequency distribution histogram 頻度分佈直方圖frequency y histogram 頻率直方圖relative frequency histogram 相對(duì)頻率直方圖;直方圖histogram frequency distribution diagram 柱狀圖解頻率分佈圖histogram of frequency 頻率直方圖 返回 frequency histogram