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近年来,随着地质勘探事业改革和地质社会市场的蓬勃发展,一个使用小断面坑道探采深部矿体,扩大其远景和储量方法,正在愈来愈多地得到应用。深
In recent years, with the reform of geological exploration and the vigorous development of the geo-social market, a method of using small section tunnels to explore deep ore bodies and expand their prospect and reserves is being applied more and more. deep