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shuangwang

  • 网络双王
shuangwangshuangwang
  1. The strata in Devonian period of Shuangwang area was divided in detail , going by new mapping theory and method of the regional geological survey .

    本文采用新的区调填图理论和方法,详细划分了双王地区的泥盆纪地层,论述了岩相古地理特征。