n.残渣;残留物
The general method of treating the residua of DK is burning methcd. 通常的双乙烯酮残渣采用简易焚烧法进行处理。
Many refineries produce no asphalt whatsoever, consuming all residua through catalytic treatment or coking. 许多精炼厂不生产任何沥青,而所有的残渣都通过催化剂处理或焦化法消耗了。
adj.残余的;残留的