“Migration into Northeast China”的概念、定义、翻译、参考文献-科学参考

单词	Migration into Northeast China
释义	Migration into Northeast China Encyclopedia 历史学历史事件释 Migration into Northeast China东北流民在封建势力的压迫剥削下破产和丧失生计，被迫自发地到东北“求食”谋生的人。
随便看	projective class group projective classical group projective classification projective closure projective collineation projective compactification projective cone projective configuration projective conic projective connected space projective connection projective coordinate projective coordinates projective coordinate system projective correlation projective correspondence projective cover projective covering projective curvature projective curvature tensor projective curve projective deformation projective design projective determinacy projective determinacy axiom

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