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在全世界范围内调查的86座矿山中,过去三年来已有52.3％实现了作业和设备现代化。69.8％将进一步实现现代化,大部分项目要在1985年年底开始实施。
Of the 86 mines surveyed worldwide, 52.3% of the mines have completed their operations and equipment modernization in the past three years. 69.8% will further realize modernization, and most of the projects will start to be implemented by the end of 1985.