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.Colour stability of coker gas oil has been improved by DMF extraction.以物质A为反应物,白土为脱色物质,研究用反应-吸附的方法提高焦化柴油的质量.A coking gas oil was treated by clay refining processs in laboratory.在这道门里, 焦化和...
Then an improved method, namely translation invariant de noising was proposed.在此基础上,探讨了对传统的阈值方法的改进, 即平移不变小波变换去噪法.The bus engine was noising in the background of the phone call.在打电话的情况下,那辆公共汽车引擎发出声音.In analytical chemistr...
他被派去扳道岔.He was assigned to man the switches.道岔无缝化是跨区间无缝线路发展的难点和关键技术.Jointless turnout is a key technique in developing CWR track across section.铁路道岔与中铁山桥平分中国市场.Railway yard with iron sanshan bridge in the Chinese market....