• Sandstone, mudstone and limestone rock-debris have a very wide distribution and are very frequently used as dam materials in Sichuan Provi- nce.

    砂岩泥岩灰岩石碴料是四川省分布广使用最多的几种

    youdao

  • Sandstone, mudstone and limestone rock-debris have a very wide distribution and are very frequently used as dam materials in Sichuan Provi- nce.

    砂岩泥岩灰岩石碴料是四川省分布广使用最多的几种

    youdao

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