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用作名詞 (n.)
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Beckmann agreed and said that was a difficulty measuring carbon use and power emissions.
貝克曼數字代表接受,并說是一家比較困難的測量方法碳的運行和決定權的進行排股票放量。
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The Beckmann solution consists of acetic acid, hydrochloric acid and acetic anhydride, and was widely used to catalyze the rearrangement.
貝克曼液體被大量時用促使重排發應,就是際材料為乙酸,酸洗和乙酸酐。
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海詞字典,十八年牌子