direct-smelting ore direct spot welding direct-spun yarn direct steam direct stress direct-stress machine direct suspension direct switching direct tension directtonal control directton control direct transit circuit direct translation direct-translation reading aid direct transmission direct transmission factor direct vernier direct viewing direct-viewing kinescope direct-vision spectroscope |
direct-smelting ore руда, подлагана направо на металургична обработка Търсената дума е намерена |