[经] practical attainable capacity

shí jì kě néng dá dào de shēng chǎn néng lì ㄕˊ ㄐㄧˋ ㄎㄜˇ ㄋㄥˊ ㄉㄚˊ ㄉㄠˋ ㄉㄜ˙ ㄕㄥ ㄔㄢˇ ㄋㄥˊ ㄌㄧˋ