Read Edit View history 二叠纪 èrdiéjì Permian Origin Definitions Defs Strokes Stroke Words Sentences Sents 二叠纪 (二疊紀) èrdiéjì Permian time word Permian (geological period 292-250m years ago) Frequency Written text 0.183 per million Cross-References Same as 二迭纪 èrdiéjì Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)
二叠纪 (二疊紀) èrdiéjì Permian time word Permian (geological period 292-250m years ago) Frequency Written text 0.183 per million Cross-References Same as 二迭纪 èrdiéjì Sources Definitions CC-CEDICT Frequency data BCC Corpus (BLCU)