短语词组短語-trimethoxy benzoylate chitin 三甲氧基苯甲醯甲殼素-trimethoxy benzoylate chitosan 三甲氧基苯甲醯殼聚糖5 -trimethoxy benzoylate chitosan 三甲氧基苯甲醯殼聚糖 返回 benzoylate