英文别名PCB70/76; 1,1'-BIPHENYL,2,3',4',5-TETRA; CB-70; 2,3',4',5-TETRACB (PCB-70); 2,5,3',4'-Tetrachlorobiphenyl; PCB-70; 1,2-dichloro-4-(2,5-dichlorophenyl)benzene; PCB No 70; 2,3',4',5-terachlorobiphenyl; 2,3',4',5-Tetrachloro-1,1'-biphenyl; Biphenyl,2,3',4',5-tetrachloro; 2,3',4',5-PCB 
