[经] forecasting profit by breakeven analysis

yòng bǎo běn fēn xī fǎ yù cè lì rùn ㄩㄥˋ ㄅㄠˇ ㄅㄣˇ ㄈㄣ ㄒㄧ ㄈㄚˇ ㄩˋ ㄘㄜˋ ㄌㄧˋ ㄖㄨㄣˋ