短语词组短语-trimethoxy benzoylate chitin 三甲氧基苯甲酰甲壳素-trimethoxy benzoylate chitosan 三甲氧基苯甲酰壳聚糖5 -trimethoxy benzoylate chitosan 三甲氧基苯甲酰壳聚糖 返回 benzoylate