成矿期的英文：
metallogenic epoch

metallogenic是什么意思：
成矿的
  • Based on study on types of ore deposits and summarization of metallogenic regularities, three metallogenic regions were outlined, and the prospecting orientation and indication have been pointed out.
    文章综述了区内各类矿床的基本特征，总结了成矿规律，归纳出三个成矿区，指出找矿方向及标志。
epoch是什么意思：
n. 纪元，时代；世，纪
  • The epoch of revolution creates great figures.
    革命时代造就伟大人物。
  • Counterfeitig was still punishable with death at that epoch
    铸私钱在那个时代是要受极刑的。
  • A large extinct ground sloth of the family Megatheriidae of the Miocene Epoch through the Pleistocene Epoch.
    大懒兽中新世至更新世时期大懒兽科之栖于地面的已绝迹的大树懒
  • We might add a remark about the derivation of the epochs of the sunspot minima and maxima
    我们不妨谈谈有关太阳黑子极小和极大期的推导。
  • J.H. Lambert initiated a new epoch in the theoretical cartography
    兰伯特在理论制图学方面开创了一个新纪元。

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