[经] territorial analysis of distribution costs

tuī xiāo chéng běn de dì qū fēn xī ㄊㄨㄟ ㄒㄧㄠ ㄔㄥˊ ㄅㄣˇ ㄉㄜ˙ ㄉㄧˋ ㄑㄩ ㄈㄣ ㄒㄧ