[经] ratio of merchandise to receivable

shāng pǐn duì yīng shōu kuǎn xiàng de bǐ lǜ ㄕㄤ ㄆㄧㄣˇ ㄉㄨㄟˋ ㄧㄥ ㄕㄡ ㄎㄨㄢˇ ㄒㄧㄤˋ ㄉㄜ˙ ㄅㄧˇ lv4