Center for Copper Mining Studies 铜与矿业研究中心
Copper mining wasteland 铜矿废弃地
copper mining enterprise 铜矿山企业
copper mining techniques 铜矿开采技术
Copper mining is one of the most difficult slurry-handling applications.
铜矿是泥浆处理中最困难的应用场合之一。
The Dajing copper mining and smelting relic site is the earliest one found in the northern China.
大井矿冶遗址是我国北方发现最早的一处古铜矿遗址。
A good example for the Middle Ages and thereafter was the silver, lead, and copper mining district of the Harz Mountains in northeastern Germany.
一个很好的例子为中世纪并在其后的是银，铅，铜采区的哈尔茨山脉东北德国。
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