Study on the Synthesis of New Chiral Derivatives of Squaric Acid and Their Application in Asymmetric Catalytic Borane Reduction of Prochiral Aryl Ketones是什么意思_Study on the Synthesis of New Chiral Derivatives of Squaric Acid and Their Application in Asymmetric Catalytic Borane Reduction of Prochiral Aryl Ketones在线翻译_英语_读音_用法_例句