The Se-rich carbonaceous rocks in the north of Yutangba is prevalently being recognized as the main source of selenium of Yutangba.

  • 渔塘坝北部出露的富硒碳质岩石,普遍地认为是渔塘坝硒的主要来源。

  • 互联网摘选 2025-01-20 18:24:28

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