degradations的例句（degradations在句子中的用法）

• The microbial and oxidative degradations of PVA were studied using the permeation chromatography ( GPC ) and UV - spectrophotometer. 采用凝胶色谱法 ( GPC ) 和紫外分光光度法(UV)研究了聚乙烯醇(PVA)微生物降解和化学氧化降解效果.
• The researches of the thermal and photo degradations of aramid fibers are systematically discussed. 摘要阐述了芳纶的热、光老化降解研究的进展情况.
• She described the degradations she had been forced to suffer. 她描述了自己被迫经受的屈辱。