减压废渣中萃取离心回收润滑油清净剂及其性能表征
李哲1,*, 张永红2

Extraction and centrifugation from decompression waste residue torecovery lubricating oil detergents and its performance characterization
Li Zhe1,*, Zhang Yonghong2
废渣中的润滑油清净剂电镜照片