短語詞組短語mushroom chitin 左旋肉堿glycol chitin 幾丁質Collodial chitin 膠狀幾丁質medical chitin 醫(yī)用幾丁糖ultrafine chitin 超細甲殼素Chitin Helmet 甲殼頭盔chitin derivative 甲殼素衍生物 返回 chitin