单词 pyrazoline 释义 pyrazoline Chem.|par-, przln|[ad. G. pyrazolin (L. Knorr 1887, in Ann. d. Chem. CCXXXVIII. 144): see prec. and -ine5.]Any of three isomeric compounds, C3H6N2, which are dihydro derivatives of pyrazole; spec. CH2CH2CH:NNH (2-pyrazolin...