[经] ratio of security to fixed liabilities

dǐ yā pǐn duì gù dìng fù zhài de bǐ lǜ ㄉㄧˇ ㄧㄚ ㄆㄧㄣˇ ㄉㄨㄟˋ ㄍㄨˋ ㄉㄧㄥˋ ㄈㄨˋ ㄓㄞˋ ㄉㄜ˙ ㄅㄧˇ lv4