Duplex capillary columns with a packed and an open section are widely used in electrochromatography.The duplex column co......

针对未燃炭含量对高不利于粉煤灰大规律综合利用的问题，从理论上分析了粉煤灰湿法浮选和干法电选分选未燃炭的基本原理，进行了三因素......