聚合物降解 聚合物分子链被分裂成较小部分的反应过程。根据聚合物降解时所受的作用及反应机理不同，通常分为热降解、氧化降解、机械降解、化学降解和生物降解等类型。研究聚合物降解反应有着很重要的意义。
讨论了聚合物降解的情况及对减阻的影响。
The degradation of the polymer and its effect on the drag reduction are also discussed.
关于紫外线辐射使聚合物降解的原理，专家们是有分歧的。
The mechanism of polymer degradation by ultraviolet radiations is not agreed upon by experts.
依据这些试验结果，结合了微球大小和聚合物降解度对于药物释放的作用得到了相应的数学上的结论。
Based on these experimental results, a suitable mathematical theory has been developed that incorporates the effect of microsphere size distribution and polymer degradation on drug release.
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