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Dispositif permettant de faire passer le canon des pièces d'artillerie à recul sur l'affut de la position de tir à la position de route et inversement
Procédé de fabrication d'objets moulés très solides, résistant à la chaleur et contenant un liant bitumineux, surtout à partir de charbon, de graphite, de brai de pétrole et de bitume, de minerai