[经] ratio of net profit to capital

jìng lì rùn duì zī běn de bǐ lǜ ㄐㄧㄥˋ ㄌㄧˋ ㄖㄨㄣˋ ㄉㄨㄟˋ ㄗ ㄅㄣˇ ㄉㄜ˙ ㄅㄧˇ lv4