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NdFeB磁体
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NdFeB磁体
Encyclopedia
工学
精密合金
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bonded NdFeB magnet
NdFeB磁体
由钕(Nd)或钕与其他稀土元素的组合,与铁(Fe)、硼(B)组成具有强磁性的金属间化合物。有时也用钴、铝、钒等元素取代部分铁。
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social commerce
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social context theory
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