archaean era

常见例句

双语例句

• The Archaean era limestone aquifer close to No. 10 coalbed is the direct aquifer of it.
  距离其较近的太灰含水层，是10煤开采的直接充水含水层。
• The wall rocks of gold deposits located in Zhaoyuan gold mineralization area were rooted in metamorphic rocks in Jiaodong rock group in Archaean era and granites in Mesozoic era.
  山东招远金矿集中区金矿床的围岩为新太古代胶东岩群变质岩和中生代花岗岩。
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