half-advance-and-half-retreat method
- half-advance-and-half-retreat method
Горное дело: камерно-столбовая система разработки с выемкой частично прямым и частично обратным ходом, камерностолбовая система разработки с выемкой камер с одной стороны выемочного штрека прямым ходом, а с другой стороны штрека-обратным ходом
Универсальный англо-русский словарь.
Академик.ру.
2011.
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