... 地下开采underground mining 露天开采surface mining;open-cast mining 露天采矿学surface mining ...
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N-UNCOUNT Opencast mining is a method of mining that is used when a mineral is near the surface and underground passages are not needed. 露天采矿 [英国英语]
Mr Correa supports open-cast mining to raise public revenues, which he says would be spent on social programmes.
科雷亚支持露天采矿，想通过它来增加财政收入，并表示这些收入将被用来支援社会福利计划。
Guo: it seems that refilling the open-cast mining site with ground water seepage and making them a new lake system is one of the popular strategies here.
郭：似乎利用外溢的地下水将露天矿场改造成新的湖泊系统是这里很常见的策略之一。
The selection of dragline is a key problem to be handled when applying dragline for open cast in surface mining.
露天矿应用拉斗铲倒堆工艺的关键问题首先要做好拉斗铲的选型。
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