3,4-二氯甲苯氨氧化制3,4-二氯苯甲腈的工艺研究
3,4-이록갑분안양화제3,4-이록분갑정적공예연구
Synthesis Process of 3,4-Dichlorobenzonitrile from 3,4-Dichlorochlorotoluene by Ammoxidation