Read Edit View history 石炭系 shítànxì carboniferous system Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 石炭系 · shítànxì · carboniferous system 2026/03/04 石炭系 shítànxì carboniferous system the global chronostratigraphic unit of rock strata corresponding to the Carboniferous period 石炭系地层在地质史上以大规模森林和煤层形成而闻名。 created sense Mar 4, 2026, 02:25 AM