| ประโยคภาษาจีน : 中文句子 | 
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|  duì对  cù suān yǐ zhǐ醋酸乙酯  duō jí多级  nì liú逆流  cuì qǔ萃取  lǜ chá绿茶  chá duō fēn茶多酚  de的  gōng yì工艺  guò chéng过程  jìn xíng进行  le了  lǐ lùn理论  fēn xī分析 | 
| In this paper, a technology of multistage countercurrent extracting tea polyphenols (TP) from green tea with ethyl acetate as extractant was theoretically analyzed. |