[经] ratio of net income to total assets

jìng shōu yì duì zī chǎn zǒng é de bǐ lǜ ㄐㄧㄥˋ ㄕㄡ ㄧˋ ㄉㄨㄟˋ ㄗ ㄔㄢˇ ㄗㄨㄥˇ ㄜˊ ㄉㄜ˙ ㄅㄧˇ lv4