[经] installation of a cost system

chéng běn kuài jì zhì dù de shè zhì ㄔㄥˊ ㄅㄣˇ ㄎㄨㄞˋ ㄐㄧˋ ㄓˋ ㄉㄨˋ ㄉㄜ˙ ㄕㄜˋ ㄓˋ