据国家统计局公布的统计数字，１９９８年我国１０种有色金属产量达到６１８万ｔ。而国内消费量为４６０万ｔ，富余１５８万ｔ，即四分之一必须出口，才能达到产销平衡。有关的统计资料还表明，目前我国有色金属工业产业结构和产品结构“倒宝塔”情况严重。例如，我国铜矿... According to the statistics released by the National Bureau of Statistics, in 1998, the output of 10 non-ferrous metals in China reached 6.18 million tons. The domestic consumption of 4600000 t, 1580000 t surplus, that is, a quarter must be exported, in order to achieve production and marketing balance. Relevant statistics also show that, at present, China’s non-ferrous metal industrial structure and product structure “inverted pagoda” is a serious situation. For example, China’s copper mines ...