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quan guo xi tu gong ye qi wu fa zhan gui hua hui yi zai zuo xian zhao kai
Author(s): 
Pages: 51
Year: Issue:  12
Journal: Machinery

Abstract: <正> 稀土金属用途广泛,六十年代末已应用于钢铁、石油、轻纺、玻陶等传统工业,近年来又在新兴产业的信息材料、大规模集成电路、激光材料、光导纤维等部门中越来越多地得到应用。我国稀土资源极为丰富,工业储量是国外储量总和的五倍多,而且品种齐全。党的十一届三中全会以来,我国稀土工业得到了
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