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用于非自耗电极电弧炉的冷却装置

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Type of Patent:发明专利
Authorization number:CN1614345
Service Invention or Not:no
Application Date:2020-05-13
Publication Date:2005-05-01
Authorization Date:2004-12-01

Pre One:提高钕铁硼永磁材料磁性能和耐蚀性的方法

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