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美国马克格罗乌希尔公司的研究资料表明,1983年资本主义国家石棉总产量比1982年提高了约2%,主要是非洲国家增长较多,具体数量如下:
According to research data from the United States’s Mark Grouth Hill Company, total asbestos production in the capitalist countries increased by about 2% in 1983 compared with 1982, mainly because African countries have more growth. The specific quantities are as follows: