Read Edit View history 奥陶系 àotáoxì Ordovician system Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 奥陶系/ 奧陶系 àotáoxì Ordovician system the Ordovician system (geological stratigraphic unit) 这里的地层属于奥陶系。 Edit Delete References Add reference No references for this word.
奥陶系/ 奧陶系 àotáoxì Ordovician system the Ordovician system (geological stratigraphic unit) 这里的地层属于奥陶系。 Edit Delete