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1981年日本国产原铝减少,进口增加。由于能源不足,油价上涨,国产原铝的竞争能力比进口铝低。国产原铝从1980年的109.1万吨减少到75万吨;进口量从1980年的84.8万吨增加到97.5万吨,大部分是从美国进口。 1977～1980年期间,日本铝材消费量缓慢增加,而1981年却减少了5％。用铝量占铝材总市场30％的建筑工业萧条,使建筑型材消费量减少;电能公共事业削减,使导电铝材消费
In 1981, the number of domestically produced primary aluminum in Japan decreased and the import increased. Due to lack of energy, rising oil prices, the competitiveness of domestically produced primary aluminum is lower than that of imported aluminum. Domestic primary aluminum was reduced from 1,091,000 tons in 1980 to 750,000 tons; its import volume increased from 848,000 tons in 1980 to 975,000 tons, mostly from the United States. Aluminum consumption in Japan increased slowly from 1977 to 1980, but decreased by 5% in 1981. The construction industry slump, which accounts for 30% of the total market for aluminum, led to a reduction in the consumption of building profiles; a reduction in electric utility utilities that made conductive aluminum consumption