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1 система разработки горизонтальными слоями с закладкой
Универсальный русско-английский словарь > система разработки горизонтальными слоями с закладкой
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2 потолкоуступная система разработки
1) Engineering: flat-back cut-and-fill system (с горизонтальным росположением забоя и одновременной закладкой), overhand stops systemУниверсальный русско-английский словарь > потолкоуступная система разработки
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