lower carboniferous to lower triassic

基本解释

• [地球科学]下石炭统—下三叠统

英汉例句

双语例句

• According to the plant fossil and sporopollen analysis , it should be Upper Carboniferous or Lower Triassic, it offers factual data for the bound of coal-bearing stratum in North China.
  经采集植物化石和孢粉样进行鉴定、分析 ，初步确定该含煤地层时代为晚古生代晚石炭世～早二叠世沉积 ，为华北晚古生代含煤地层沉积边界的厘定提供了可靠依据。

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专业释义

地球科学

• 下石炭统—下三叠统