[经] ratio of internal reserves to net profits

nèi bù zhǔn bèi yǔ jìng lì yì bǐ lǜ ㄋㄟˋ ㄅㄨˋ ㄓㄨㄣˇ ㄅㄟˋ ㄩˇ ㄐㄧㄥˋ ㄌㄧˋ ㄧˋ ㄅㄧˇ lv4