以下为句子列表：
英文: NONM has the National Engineering Research Center for Tantalum &Niobium Special Metal Materials , the State-Grade Enterprise Technology Center, the Post-Doctor R &D Workstation, is one of the Commercialization Bases of the State 863 ProgramIt is the leadi
中文: 宁夏东方有色金属集团公司是国内最大的钽、铌、铍产品生产基地和科技先导型的钽铌铍研究中心；是我国高新技术领域里一个极其重要的稀有金属钽、铌、铍新材料供应基地和出口外向型高新技术企业。
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英文: NONM is one of the state-grade key Hi-Tech enterprises, an executive member company of Tantalum-Niobium International Study Center (TIC), also one of the World Three Top Tantalum Processors.
中文: 拥有国家钽铌特种金属材料工程技术研究中心、国家级企业技术中心、博士后科研工作站、国家863产业化基地。
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英文: The critical current density of pure MgB2 is comparable to that of triniobium tin at low magnetic fields but falls off much more rapidly at higher fields.
中文: 在低磁场下，硼化镁的临界电流密度与三铌化锡相当，但是在较高的磁场下却下降得很快。
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英文: The tantalum and niobium reserves of China amount to 20% and 1.5% of world wide reserves, respectively.
中文: 摘要我国的钽占世界储量的20%，铌占世界储量的1.5%。
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英文: To remove dissolved oxygen in the molten metal prior to pouring, elements have been added which have high affinity for oxygen such as titanium, vanadium, niobium and magnesium.
中文: 为了在浇铸之前消除熔化金属中的溶解氧，需要在金属中添加具有很高的氧亲合力的元素，如钛，钒，铌和镁。
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