随后，20世纪50年代制造出了铁氧体 (ferrite),70年代制造出稀土磁铁 [rare earth magnet 包括钕铁硼 (ndfeb)和钐钴 (smco)]。 至此，磁学科技得到了飞速发展，强磁材料也使得元件更加. 帝国时代3亚洲王朝秘籍： 1、a recent study indicated that 100% of herdables are obese：地图上所有动物身上的肉增加到最多。 give me liberty or give me coin ： 加10000金。 medium.
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