[经] ratio of net income to net worth

jìng shōu yì duì jìng zhí de bǐ lǜ ㄐㄧㄥˋ ㄕㄡ ㄧˋ ㄉㄨㄟˋ ㄐㄧㄥˋ ㄓˊ ㄉㄜ˙ ㄅㄧˇ lv4