“马恒昌”的概念、定义、翻译、参考文献-科学参考

单词	马恒昌
释义	马恒昌 Encyclopedia 历史学劳动模范释 Ma Hengchang马恒昌（1907-07-24～1985-07-18）中国机械工人，劳动模范。
随便看	projective base projective binormal projective bundle projective character projective class 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

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