短語詞組短語Discoloration effect 退色效應(yīng);變色效應(yīng)Tetracycline Discoloration 四環(huán)素引起的牙齒變色blue discoloration 青變;發(fā)藍(lán)變色food discoloration 食品變色Discoloration Garnet 變色石榴石greenish discoloration 綠色變色癥preventing discoloration 防變色catalysis discoloration 催化褪色discoloration mechanism 變色機理 返回 discoloration