[经] depreciation-percentage of original cost

yuán shǐ chéng běn dìng lù zhé jiù fǎ ㄩㄢˊ ㄕˇ ㄔㄥˊ ㄅㄣˇ ㄉㄧㄥˋ ㄌㄨˋ ㄓㄜˊ ㄐㄧㄡˋ ㄈㄚˇ