| 英文名称: | | 1,1,2,2-tetrachloro-1-fluoro-ethan | | 1-fluoro-1,1,2,2-tetrachloroethane | | 1-fluorotetrachloroethane | | 1,1,2,2-tetrachloro-1-fluoro-ethane | | freon 121 | | ethane,1,1,2,2-tetrachloro-1-fluoro- | | 1,1,2,2-tetrachloro-1-fluoroethane | | HCFC 121 | | R 121 | | 1,1,2,2-tetrachlorofluoroethane | | HCFC-121 | | 1,1,2,2-Tetrachlor-1-fluorethan | | H-FCKW-121 | | R-121 |
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