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【摘 要】
：
The internal frictions of the specimens in the waist centre of the commercial BNb and BNbRE rails, which were left in air for two years, were measured. It is fo
【机 构】
：
College of Sciences,Research Institute of Iron and Steel
【出 处】
：
稀土学报（英文版）
【发表日期】
：
2004年期
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