double-bondedBNC²³⁶²¹³⁺¹ 例句 This paper, according to the process of double-bonded carbonic acid reduction, the isomerism of hydrazone& alkali reduction, depicts the current polarogram research of double-bonded carbonic acid. 本文从碳氮双键的还原过程、腙的异构和希夫碱的还原三个方面概述了碳氮双键的极谱研究现状。 chemyq