mining in deep - lying

 
  • 深部开采

mining in deep - lying的用法和样例:

例句

  1. Most of large and middle scale open-pit mines in China have reached deep mining.
    摘要我国的大多数大中型露天矿山已经或即将进入深部开采。

mining in deep - lying的相关资料:

临近单词

今日热词
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