benzoyloxy英美n. 苯甲酸基,苯甲酰氧基 C6H5COO—化学双语例句Study on the reaction of allylic oxidation to 9 β-benzoyloxy-2, 3-dehydro-β-agarofuran2,3-去氢-9β一苯甲酰氧基-β-沉香呋喃烯丙型氧化反应的研究