同根派生 英汉例句用作名词 (n.)The Beckmann solution consists of acetic acid, hydrochloric acid and acetic anhydride, and was widely used to catalyze the rearrangement.贝克曼溶剂被广泛用来催化重排反应，其实际成分为乙酸，盐酸和乙酸酐。