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Определение твердых сплавов. Твердые сплавы. Характеристики твердых сплавов. Классификация твердых сплавов. Свойства твердых сплавов. Марка твёрдого сплава чугуна. Марка твердого сплава для обработки чугуна и для стали. Твердый сплав марка стали. Обработка стали сплавов