1、 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。
来源:
2、 Beckmann agreed and said that was a difficulty measuring carbon use and power emissions.
贝克曼表示同意，并说这是一个困难的测量碳的使用和权力的排放量。
来源:
中