Colour stability of coker gas oil has been improved by DMF extraction.以二甲基亚砜为萃取溶剂,用溶剂萃取的方法提高焦化柴油的颜色安定性.The coker gas oil was refined by benzyl alcohol extraction.以苄醇为溶剂,用萃取方法提高了焦化柴油的质量.Tell Colonel Coker, I am investigat...

coker的音标：coker的英式发音音标为：['kəʊkə]coker的美式发音音标为：['koʊkə]...

n.焦化设备，炼焦器，上核...