[经] ratio of interest expense to sales

lì xī fèi yòng yǔ xiāo huò bǐ lǜ ㄌㄧˋ ㄒㄧ ㄈㄟˋ ㄩㄥˋ ㄩˇ ㄒㄧㄠ ㄏㄨㄛˋ ㄅㄧˇ lv4