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德国铸造师协会发展史专题委员会第18号报道:“……人们可以断言,毫无疑义所有生铁品种都能够用于冲天炉熔炼,冲天炉比竖炉能够更好地适应炉料的变动”。E.F.Durre,1875年。
The Founding Association of German Casting Society Development Committee No. 18 reports: “... one can assert that there is no doubt that all pig iron varieties can be used for cupola melting, cupola furnace shaft furnace to better adapt to changes in charge.” E. F. Durre, 1875.