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熙河开边
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熙河开边
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Battles for Recapture Xihe regions in the Northern Song Dynasty
熙河开边
北宋熙宁时期,在神宗和王安石变法派支持下,由王韶主持,宋朝降服西北河湟吐蕃诸部,建置熙河路,收复熙、河、洮、岷、叠、宕等州幅员3000里地域,取得了开边拓土的重大胜利。
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equivalence
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equivalence between formal grammar and automaton
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equivalence classes of extension of a group
equivalence class of extensions of a group
equivalence condition
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equivalence length of pendulum
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equivalence of algorithms
equivalence of automata
equivalence of bilinear forms
equivalence of categories
equivalence of dynamical systems
equivalence of ensembles
equivalence of formal systems
equivalence of group actions
equivalence of matrices
equivalence of norms
equivalence of quadratic forms
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