[经] indexes of labour productivity, labour productivity index
láo dòng shēng chǎn lǜ zhǐ shù ㄌㄠˊ ㄉㄨㄥˋ ㄕㄥ ㄔㄢˇ lv4 ㄓˇ ㄕㄨˋ
劳动生产率指数