• In the research area, the coal series in late Palaeozoic era were mainly formed from epeiric sea - coastal plain environment.

    研究古生代含煤岩系主要形成陆表海岸平原环境中。

    youdao

  • In the research area, the coal series in late Palaeozoic era were mainly formed from epeiric sea - coastal plain environment.

    研究古生代含煤岩系主要形成陆表海岸平原环境中。

    youdao

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