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METHOD OF SINKING A TECHNOLOGICAL WELL IN MINE WORKING INFLUENCE ZONE
METHOD OF SINKING A TECHNOLOGICAL WELL IN MINE WORKING INFLUENCE ZONE
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机译:影响矿区工作区技术井的方法
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摘要
the invention относитс to mountain industrial - t and m. b. used in drilling hydraulic system cleaning type of забо wells placed in the zone of вли ни mines goal is to reduce the cost of city едени
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