This is determined by the characters of metal production procedure as well as selectivemining method itself.
这种情况是由于金属生产和选别式地下开采的特点而引起的。
2
The basic principle, major controlled process condition, mining process and its characteristics of selective leaching are analyzed. It is a clean mining process of high efficiency.
Association rule mining is an important sub-branch of data mining. It has been used widely in selective marketing, telecom business, bank management and so on.