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铈永磁体
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铈永磁体
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精密合金
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cerium permanent magnets
铈永磁体
铈(Ce)含量占稀土总量的质量百分数最大的一种新型磁体。
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Strahler-Zhou Shuzhen's climatic classification
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straightenable dynamical system
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straightening of the angle
straightening theorem
straightest path
straight eyepiece
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