distilled crude carbolic acid

用法例句

This paper describes the situation and effect when composite oblique hole which is widely used in petrochemical industry applied in crude benzol distillation process,The production practive has prove that,the quantity of the recyclable oil of crude benzol will increase by 50 to 80 percent,costing shorter construction period,thus achieving good economic benefit.

主要叙述了在石油化工中应用广泛的复合斜孔塔盘在煤化工粗苯蒸馏中使用的状况和效果。