[经] turnover of receivable ratio

yīng shōu kuǎn xiàng zhōu zhuǎn bǐ lǜ ㄧㄥ ㄕㄡ ㄎㄨㄢˇ ㄒㄧㄤˋ ㄓㄡ ㄓㄨㄢˇ ㄅㄧˇ lv4