ESCA studies of polyimide(聚酰亚胺) Pyromellitic dianhydride--oxydianiline PMDA-ODA ODA Part C KLLAuger PMDA Part POLYIMIDE O KLI OIs CIs NIs 6060元0605604d03260-100 BindingESCA studies of polyimide(聚酰亚胺) Pyromellitic dianhydride -- oxydianiline PMDA - ODA C KLL Auger