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一煉铁冶金業是国民經济的基础。最近45—50年內生铁的产量大大地提高了。例如,以1905年世界上生鉄产量为5,243.3万吨,則1935年为6,149.9万吨,1940年为9,120万吨,1950年为10,738.4万吨。目前已大大超过最后的这个数字了。我們举像比利时这样一个不大的国家为例,它在1935年生产生铁131.1万吨,1940年生产222万吨,1950年生产369.7万吨。美国的生鉄产量提高得特別快,1935年为2,329万吨,1940年为4,240万吨,1950年为5,935.4万吨。究竟是依靠什么能够这样快地提高生铁产量呢?
A iron smelting industry is the foundation of the national economy. The output of pig iron has risen dramatically in the last 45-50 years. For example, in 1905, the world’s 鉄 production reached 52.443 million tons, compared to 61.499 million tons in 1935, 91.2 million tons in 1940 and 107.884 million tons in 1950. So far this figure has been greatly exceeded. Let us take a small country like Belgium for example. It produced 1.31 million tons of pig iron in 1935, 2.22 million tons in 1940 and 3.697 million tons in 1950. Production in the United States was particularly high, up from 23.29 million tons in 1935 to 42.4 million tons in 1940 and 59.354 million tons in 1950. What can we do to boost pig iron production so quickly?