acetoneln.丙酮基丙酮acetonen.[化]丙酮acetone cyanohydrin poisoning丙酮合氰醇中毒acetone-ethanol fermentation丙酮乙醇发酵acetone-butanol fermentation丙酮丁醇发酵acetone-benzol dewaxing unit酮苯脱蜡装置acetone -benzol dewaxing unit酮苯脱蜡acetone-benzol dewaxing plant丙酮苯脱蜡装置acetone fractional precipitation丙酮分级沉淀acetone and butanol fermentation丙酮丁醇发酵Acetone method was emphasized.重点介绍了丙酮法。acetone-benzol dewaxing process丙酮-苯脱蜡法