内切水解(Endo-wise) 是本课源文档中的必保知识点，前面页面未覆盖，需要单独补齐。
原文线索：S analysis, endo-type enzymatic hydrolysis for PET was demonstrated [4]. In addition, X-ray photoelectron spectrosc
酶法改性PET的核心机制，区别于碱法的外切破坏
补齐高优先级知识点：内切水解(Endo-wise)。 原文线索：S analysis, endo-type enzymatic hydrolysis for PET was demonstrated [4]. In addition, X-