选矿就是精选生矿。通过选矿，有用矿物从伴随的脉石中分离出来。
Ore dressing refers to the concentration of a raw ore. Dressing can separate the desired mineral from much of the associated gangue.
矿石的上述特性造成有用矿物难以单体解离并易于泥化，因而使矿石难选。
This above feature makes the valuable single mineral difficult to liberate and easy to be mud, so this ore is very hard to separate.
采矿是一种行动，过程或作业，把有用矿物开采出来，并运送到加工地点或使用地点。
Mining is an act, process or work for extracting minerals and transporting them to the point of processing or use.
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