The solvents we used were acetone,methyl ethyl ketone,methyl isobutyl ketone,ethyl acetate and vinyl acetate.

 
  • 對丙酮、甲苯、丁酮、甲基異丁基酮、乙酸乙酯、醋酸乙烯酯等溶劑進(jìn)行了評選。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan