Catalysis and mechanism of ionic liquids for direct synthesis of dimethyl carbonate;
离子液体对直接合成碳酸二甲酯反应的促进作用及机理分析
Direct mini-incision thyroidectomy;
小切口直接入路甲状腺切除术
Direct coronary stenting without predilation;
无预扩张直接冠状动脉内支架置入术