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来源:雅诚德英语网
The said incline raise borer, developed by Changsha Institute of Mining Re-search for incline raise boring in dip onebody mining, is the first generation product in Chi-na.
为了解决倾斜矿体开采中斜天井掘进问题,我院新开发了我国第一代斜天井钻机产品。
The said incline raise borer, developed by Changsha Institute of Mining Re-search for incline raise boring in dip onebody mining, is the first generation product in Chi-na.
为了解决倾斜矿体开采中斜天井掘进问题,我院新开发了我国第一代斜天井钻机产品。