Keywords Open-pit mine;Mining by stages;Wall pushback transition;

 
  • 露天矿;分期开采;扩帮过渡;
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  • 深远海浮式风电平台 - deep-sea floating wind power platform
  • 京雄高速公路 - Beijing-Xiongan expressway
  • 农业及相关产业增加值 - the added value of agriculture and related industries
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