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矿业是人类的一项重要的社会实践和生产活动,矿业开发在社会经济发展中占据极其重要的位置。我国是一个矿业大国,随着矿业经济的发展,矿业文
Mining is an important social practice and production activity of mankind. Mining exploitation occupies an extremely important position in the social and economic development. China is a big mining country, with the development of mining economy, mining text