“氯甲苯”造句
2024年06月15日 04:10:10
研究了用無溶劑重結(jié)晶法提純2,6二
氯甲苯.
Purification of 2,6 dichlorotoluene by the recrystallization method without solvent was studied.
以對(duì)
氯甲苯為原料,經(jīng)氯化、水解反應(yīng)合成對(duì)氯苯甲酰氯,總收率. 6%.%.
The total yield and 4 - chlorohenzoyl chloride. 6 % and. %.
研究炭管采集空氣中鄰 -
氯甲苯的氣相色譜分析方法.
GC analytical method for o - chlorotoluene in the workplace air using sampling by charcoal tube was studied.